Stackadia

Project Browser

Project structure

Cards & Backgrounds

Select project structure here; Inspector follows the selected Project, Card, Background, Group, or Object.

Cards
Backgrounds

Current Card Objects

Objects on the current card. Select to edit; drag to reorder; use eye and lock controls as needed.

No group focus
800 x 520Wide
100%
ReadyLocal recovery enabled
Card 1 of 1
No selection

Guided Authoring

Practice essential authoring tasks using ordinary editable Stackadia content and guided checks.

0 of 6 tasks completeShowcase projects can remain separate until these authoring workflows are stable.
Task 1

Create a five-card interactive stack

Choose a task to begin.

Target15 minutes
ElapsedNot started
StatusReady

Completion evidence

    Guided build sequence

      Start the task when you are ready.

      Project Workflow

      Move through the existing Stackadia tools as one connected authoring process.

      ProjectReviewing the current project…
      Recommended next step

      Review the project workflow

      Stackadia will suggest the most useful existing workspace.

      1

      Create & organize

      Cards, reusable components, assets, and visual structure.

      Review
      2

      Behavior & navigation

      Scripts, actions, application flow, animation, and simulation.

      Review
      3

      Data & media

      Tables, reports, media, and localization.

      Optional
      4

      Test & review

      Interaction testing, accessibility, permissions, and project readiness.

      Not checked
      5

      Release & handoff

      Extensions, verified distribution, project history, and author handoff.

      Not built
      ?

      Learn in context

      Search documentation, follow a lesson, or open keyboard help.

      Available

      The menubar remains the authoritative command surface. Project Workflow links to the same commands and ordinary editable Stackadia objects; it does not create a parallel project system.

      Controller Studio

      Map keyboard and gamepad input to named Game Actions, test live controllers, and keep input meaning separate from device-specific buttons.

      Profile & mappings

      Each Game Action can have one keyboard binding and one semantic gamepad binding. The strongest active input wins.

      Live controller

      No connected controller detected.

      No buttons pressed

      Choose Listen beside an action, then press a key, controller button, or move a stick strongly.

      Runtime semantics

      Browse sends gameActionDown, gameActionChanged, and gameActionUp to the project. Scripts can query gameActionValue() without knowing whether the input came from a keyboard or controller.

      Interaction & Simulation

      Lightweight drag, drop, collision, motion, input, timers, and state behavior for ordinary Stackadia objects.

      Object

      Select an object to configure.

      Drag, drop & snap
      Collision & proximity

      Collision and proximity messages include the other object's ID and name.

      Motion & follow
      Keyboard, touch & gamepad

      No connected controller detected.

      State, score & variables

      Use Set state, Adjust score / progress, and countdown actions without scripting, or handle the same events in Stackadia Script.

      Physics Studio

      Author Stackadia Physics 1.0 worlds, reusable materials, bodies, joints, snapshots, and readable Script controls.

      Configure, inspect, and test 2D physics behavior.

      Card physics world

      Object body

      Select an object.

      Force and impulse test

      Joints & springs

      Snapshots

      Snapshots store body positions, velocities, and sleeping state for repeatable simulations.

      Runtime diagnostics

      Module is lazy loaded when physics is enabled.

      Readable Stackadia Script

      apply force point(120, 0) to graphic "Ball"
      apply impulse point(0, -180) to graphic "Ball"
      pause physics
      step physics
      capture physics snapshot "Start"
      restore physics snapshot "Start"

      Use these controls to configure and test project physics.

      3D Scene Editor

      Selected 3D scene

      Scene and model

      Models

      Import one or more GLB/GLTF models, then position each model independently. GLB is preferred for portable stacks.

      Model and primitive changes are staged until Apply & Preview.

      Position
      Rotation (degrees)
      Scale

      Select a model to edit its transform.

      No imported models. The built-in primitive is used until a model is added.

      Model mode retains imported base-color, normal, metallic-roughness, emissive, occlusion, and texture maps. Override mode is useful for prototypes and stylized scenes.

      Camera and navigation

      Browse camera interaction

      Orbit uses drag, zoom uses the wheel/trackpad, and pan uses right-drag or Shift-drag. Author mode always retains camera access for scene setup.

      Orbit uses drag, wheel/trackpad zoom, and right-drag or Shift-drag pan when those Browse permissions are enabled. Reset View restores the authored camera; Frame Selected Model centers the model chosen in the Models list. First-person and fly modes continue to use W/A/S/D, Shift, and Q/E.

      Lighting, camera, and output

      Capability detection has not run.

      Scene3D supports glTF/GLB materials, hierarchy, animation, cameras, lights, geometry picking, scene framing, and runtime statistics. Canvas 2D provides a fallback when WebGL 2 or Three.js is unavailable.

      Animation

      Stackadia reads glTF animation names and provides bounded reference clips. Scene scripts can handle sceneAnimationStarted, sceneAnimationLoop, and sceneAnimationEnded.

      Terrain and particles

      Performance guardrails

      Performance check readyAdvisory metrics are calculated from the current Scene3D draft and live renderer when available.
      0Visible models
      0 BModel source
      0Visible meshes
      0Visible nodes
      0Declared textures
      —Live triangles
      —Live draw calls
      —Live FPS

      Guardrails are advisory, not hard limits. Static estimates use the current editor draft; live draw/triangle/FPS values reflect the last applied Three.js preview. The existing “Show draw-call…” option can display renderer statistics directly in the viewport.

      3D Scene Exchange

      No scene exchange has been recorded yet.

      Exchange packages include scene settings, composition, model assets, and fallback assets for offline round-trip use.

      Advanced Actions

      Selected object

      0 total actions
      Quick add

      Action sequence

      Action settings

      Select or add an action.

      Learn from this Action

      Select an Action to see how this event relates to Stackadia Script.

      -- Select an Action to see a Script learning example.

      This is a learning example, not generated project code. Your Actions remain unchanged and continue to run before the object's Script handler.

      Quick Build & Action Recipes

      Choose a result, configure it, preview the ordinary editable actions, then apply.

      1

      Choose what should happen

      Recipes use Stackadia’s existing actions, events, objects, and scripts.

      2

      Configure the recipe

      Select a recipe to begin.

      3

      Preview the result

      Everything listed below remains editable in the Action Editor or Inspector.

      About Stackadia

      Browser-first visual application authoring.

      Stackadia 1.4.4 Final Development

      Development phase: Phase 6.21.16 / R156.16

      Development revision: R156.16 — Stackadia 1.4.4 Final HTML App Object

      Frozen parent: Immutable Stackadia 1.4.3 Final / Phase 6.20.2 / R155.2

      HTML App release documentation and XStack publication readiness; persistent protected runtime retained.

      Project schema 48 · Stackadia Script 1.2 · XStack 3 · Extension SDK 3

      Author: Michael Roberts · Revised October 1, 2026

      Copyright © 2026 Michael Roberts

      www.stackadia.com · www.mygiantbrain.com · www.krellstudios.com

      Licensed under the GNU General Public License, version 3 or later (GPL-3.0-or-later).

      No warranty. Use is at your own risk. The complete disclaimer is available in Legal Notices.

      Contains AI-generated content.

      Stackadia Legal Notices

      License, disclaimer, third-party materials, and AI content.

      License

      SPDX: GPL-3.0-or-later

      Copyright © 2026 Michael Roberts. Stackadia is free software distributed under the GNU General Public License, version 3 or later. The complete license follows.

      Disclaimer
      STACKADIA SOFTWARE DISCLAIMER
      
      Stackadia and the Stackadia Player are free software distributed under the GNU General Public License, version 3 or later (GPL-3.0-or-later).
      
      To the fullest extent permitted by applicable law, Stackadia and the Stackadia Player are provided “as is,” without warranties of any kind, either express or implied. This includes, without limitation, implied warranties of merchantability and fitness for a particular purpose. You assume all risk associated with installing, operating, modifying, distributing, or otherwise using the software, including opening, running, editing, importing, exporting, or saving stacks and related files.
      
      To the fullest extent permitted by applicable law, the copyright holders, contributors, developers, distributors, and other parties who modify or convey the software will not be liable for any damages arising from its use or inability to be used. This includes, without limitation, direct, indirect, incidental, special, exemplary, or consequential damages; loss or corruption of data; damage to hardware, software, or other systems; interruption of work; loss of profits; inaccurate results; incompatibility with other programs; or losses sustained by you or a third party, even if advised that such damages may occur.
      
      Nothing in this notice excludes or limits liability that cannot lawfully be excluded or limited. If a written warranty or support agreement is provided separately, that agreement applies only to the extent expressly stated.
      
      This notice summarizes, but does not replace, the warranty disclaimer and limitation of liability contained in Sections 15, 16, and 17 of the GNU General Public License version 3. The complete license is included with the software and should be consulted for its full terms.
      
      Third-Party Materials

      Stackadia and the Stackadia Player may include software, source code, libraries, fonts, icons, images, audio, documentation, or other materials created by third parties and used under their respective licenses. Copyright in these materials remains with their original authors and copyright holders. Applicable attribution notices and license terms are provided in the Third-Party Notices accompanying this software.

      Three.js 0.185.1 / revision 185
      Includes the Three.js core/module runtime and OrbitControls addon.
      Copyright © 2010–2026 Three.js authors
      Licensed under the MIT License.
      https://threejs.org/
      
      The complete MIT License accompanies this software in THIRD_PARTY_NOTICES.txt.

      AI Content

      Contains AI-generated content.

      Complete GNU GPL version 3

                          GNU GENERAL PUBLIC LICENSE
                             Version 3, 29 June 2007
      
       Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
       Everyone is permitted to copy and distribute verbatim copies
       of this license document, but changing it is not allowed.
      
                                  Preamble
      
        The GNU General Public License is a free, copyleft license for
      software and other kinds of works.
      
        The licenses for most software and other practical works are designed
      to take away your freedom to share and change the works.  By contrast,
      the GNU General Public License is intended to guarantee your freedom to
      share and change all versions of a program--to make sure it remains free
      software for all its users.  We, the Free Software Foundation, use the
      GNU General Public License for most of our software; it applies also to
      any other work released this way by its authors.  You can apply it to
      your programs, too.
      
        When we speak of free software, we are referring to freedom, not
      price.  Our General Public Licenses are designed to make sure that you
      have the freedom to distribute copies of free software (and charge for
      them if you wish), that you receive source code or can get it if you
      want it, that you can change the software or use pieces of it in new
      free programs, and that you know you can do these things.
      
        To protect your rights, we need to prevent others from denying you
      these rights or asking you to surrender the rights.  Therefore, you have
      certain responsibilities if you distribute copies of the software, or if
      you modify it: responsibilities to respect the freedom of others.
      
        For example, if you distribute copies of such a program, whether
      gratis or for a fee, you must pass on to the recipients the same
      freedoms that you received.  You must make sure that they, too, receive
      or can get the source code.  And you must show them these terms so they
      know their rights.
      
        Developers that use the GNU GPL protect your rights with two steps:
      (1) assert copyright on the software, and (2) offer you this License
      giving you legal permission to copy, distribute and/or modify it.
      
        For the developers' and authors' protection, the GPL clearly explains
      that there is no warranty for this free software.  For both users' and
      authors' sake, the GPL requires that modified versions be marked as
      changed, so that their problems will not be attributed erroneously to
      authors of previous versions.
      
        Some devices are designed to deny users access to install or run
      modified versions of the software inside them, although the manufacturer
      can do so.  This is fundamentally incompatible with the aim of
      protecting users' freedom to change the software.  The systematic
      pattern of such abuse occurs in the area of products for individuals to
      use, which is precisely where it is most unacceptable.  Therefore, we
      have designed this version of the GPL to prohibit the practice for those
      products.  If such problems arise substantially in other domains, we
      stand ready to extend this provision to those domains in future versions
      of the GPL, as needed to protect the freedom of users.
      
        Finally, every program is threatened constantly by software patents.
      States should not allow patents to restrict development and use of
      software on general-purpose computers, but in those that do, we wish to
      avoid the special danger that patents applied to a free program could
      make it effectively proprietary.  To prevent this, the GPL assures that
      patents cannot be used to render the program non-free.
      
        The precise terms and conditions for copying, distribution and
      modification follow.
      
                             TERMS AND CONDITIONS
      
        0. Definitions.
      
        "This License" refers to version 3 of the GNU General Public License.
      
        "Copyright" also means copyright-like laws that apply to other kinds of
      works, such as semiconductor masks.
      
        "The Program" refers to any copyrightable work licensed under this
      License.  Each licensee is addressed as "you".  "Licensees" and
      "recipients" may be individuals or organizations.
      
        To "modify" a work means to copy from or adapt all or part of the work
      in a fashion requiring copyright permission, other than the making of an
      exact copy.  The resulting work is called a "modified version" of the
      earlier work or a work "based on" the earlier work.
      
        A "covered work" means either the unmodified Program or a work based
      on the Program.
      
        To "propagate" a work means to do anything with it that, without
      permission, would make you directly or secondarily liable for
      infringement under applicable copyright law, except executing it on a
      computer or modifying a private copy.  Propagation includes copying,
      distribution (with or without modification), making available to the
      public, and in some countries other activities as well.
      
        To "convey" a work means any kind of propagation that enables other
      parties to make or receive copies.  Mere interaction with a user through
      a computer network, with no transfer of a copy, is not conveying.
      
        An interactive user interface displays "Appropriate Legal Notices"
      to the extent that it includes a convenient and prominently visible
      feature that (1) displays an appropriate copyright notice, and (2)
      tells the user that there is no warranty for the work (except to the
      extent that warranties are provided), that licensees may convey the
      work under this License, and how to view a copy of this License.  If
      the interface presents a list of user commands or options, such as a
      menu, a prominent item in the list meets this criterion.
      
        1. Source Code.
      
        The "source code" for a work means the preferred form of the work
      for making modifications to it.  "Object code" means any non-source
      form of a work.
      
        A "Standard Interface" means an interface that either is an official
      standard defined by a recognized standards body, or, in the case of
      interfaces specified for a particular programming language, one that
      is widely used among developers working in that language.
      
        The "System Libraries" of an executable work include anything, other
      than the work as a whole, that (a) is included in the normal form of
      packaging a Major Component, but which is not part of that Major
      Component, and (b) serves only to enable use of the work with that
      Major Component, or to implement a Standard Interface for which an
      implementation is available to the public in source code form.  A
      "Major Component", in this context, means a major essential component
      (kernel, window system, and so on) of the specific operating system
      (if any) on which the executable work runs, or a compiler used to
      produce the work, or an object code interpreter used to run it.
      
        The "Corresponding Source" for a work in object code form means all
      the source code needed to generate, install, and (for an executable
      work) run the object code and to modify the work, including scripts to
      control those activities.  However, it does not include the work's
      System Libraries, or general-purpose tools or generally available free
      programs which are used unmodified in performing those activities but
      which are not part of the work.  For example, Corresponding Source
      includes interface definition files associated with source files for
      the work, and the source code for shared libraries and dynamically
      linked subprograms that the work is specifically designed to require,
      such as by intimate data communication or control flow between those
      subprograms and other parts of the work.
      
        The Corresponding Source need not include anything that users
      can regenerate automatically from other parts of the Corresponding
      Source.
      
        The Corresponding Source for a work in source code form is that
      same work.
      
        2. Basic Permissions.
      
        All rights granted under this License are granted for the term of
      copyright on the Program, and are irrevocable provided the stated
      conditions are met.  This License explicitly affirms your unlimited
      permission to run the unmodified Program.  The output from running a
      covered work is covered by this License only if the output, given its
      content, constitutes a covered work.  This License acknowledges your
      rights of fair use or other equivalent, as provided by copyright law.
      
        You may make, run and propagate covered works that you do not
      convey, without conditions so long as your license otherwise remains
      in force.  You may convey covered works to others for the sole purpose
      of having them make modifications exclusively for you, or provide you
      with facilities for running those works, provided that you comply with
      the terms of this License in conveying all material for which you do
      not control copyright.  Those thus making or running the covered works
      for you must do so exclusively on your behalf, under your direction
      and control, on terms that prohibit them from making any copies of
      your copyrighted material outside their relationship with you.
      
        Conveying under any other circumstances is permitted solely under
      the conditions stated below.  Sublicensing is not allowed; section 10
      makes it unnecessary.
      
        3. Protecting Users' Legal Rights From Anti-Circumvention Law.
      
        No covered work shall be deemed part of an effective technological
      measure under any applicable law fulfilling obligations under article
      11 of the WIPO copyright treaty adopted on 20 December 1996, or
      similar laws prohibiting or restricting circumvention of such
      measures.
      
        When you convey a covered work, you waive any legal power to forbid
      circumvention of technological measures to the extent such circumvention
      is effected by exercising rights under this License with respect to
      the covered work, and you disclaim any intention to limit operation or
      modification of the work as a means of enforcing, against the work's
      users, your or third parties' legal rights to forbid circumvention of
      technological measures.
      
        4. Conveying Verbatim Copies.
      
        You may convey verbatim copies of the Program's source code as you
      receive it, in any medium, provided that you conspicuously and
      appropriately publish on each copy an appropriate copyright notice;
      keep intact all notices stating that this License and any
      non-permissive terms added in accord with section 7 apply to the code;
      keep intact all notices of the absence of any warranty; and give all
      recipients a copy of this License along with the Program.
      
        You may charge any price or no price for each copy that you convey,
      and you may offer support or warranty protection for a fee.
      
        5. Conveying Modified Source Versions.
      
        You may convey a work based on the Program, or the modifications to
      produce it from the Program, in the form of source code under the
      terms of section 4, provided that you also meet all of these conditions:
      
          a) The work must carry prominent notices stating that you modified
          it, and giving a relevant date.
      
          b) The work must carry prominent notices stating that it is
          released under this License and any conditions added under section
          7.  This requirement modifies the requirement in section 4 to
          "keep intact all notices".
      
          c) You must license the entire work, as a whole, under this
          License to anyone who comes into possession of a copy.  This
          License will therefore apply, along with any applicable section 7
          additional terms, to the whole of the work, and all its parts,
          regardless of how they are packaged.  This License gives no
          permission to license the work in any other way, but it does not
          invalidate such permission if you have separately received it.
      
          d) If the work has interactive user interfaces, each must display
          Appropriate Legal Notices; however, if the Program has interactive
          interfaces that do not display Appropriate Legal Notices, your
          work need not make them do so.
      
        A compilation of a covered work with other separate and independent
      works, which are not by their nature extensions of the covered work,
      and which are not combined with it such as to form a larger program,
      in or on a volume of a storage or distribution medium, is called an
      "aggregate" if the compilation and its resulting copyright are not
      used to limit the access or legal rights of the compilation's users
      beyond what the individual works permit.  Inclusion of a covered work
      in an aggregate does not cause this License to apply to the other
      parts of the aggregate.
      
        6. Conveying Non-Source Forms.
      
        You may convey a covered work in object code form under the terms
      of sections 4 and 5, provided that you also convey the
      machine-readable Corresponding Source under the terms of this License,
      in one of these ways:
      
          a) Convey the object code in, or embodied in, a physical product
          (including a physical distribution medium), accompanied by the
          Corresponding Source fixed on a durable physical medium
          customarily used for software interchange.
      
          b) Convey the object code in, or embodied in, a physical product
          (including a physical distribution medium), accompanied by a
          written offer, valid for at least three years and valid for as
          long as you offer spare parts or customer support for that product
          model, to give anyone who possesses the object code either (1) a
          copy of the Corresponding Source for all the software in the
          product that is covered by this License, on a durable physical
          medium customarily used for software interchange, for a price no
          more than your reasonable cost of physically performing this
          conveying of source, or (2) access to copy the
          Corresponding Source from a network server at no charge.
      
          c) Convey individual copies of the object code with a copy of the
          written offer to provide the Corresponding Source.  This
          alternative is allowed only occasionally and noncommercially, and
          only if you received the object code with such an offer, in accord
          with subsection 6b.
      
          d) Convey the object code by offering access from a designated
          place (gratis or for a charge), and offer equivalent access to the
          Corresponding Source in the same way through the same place at no
          further charge.  You need not require recipients to copy the
          Corresponding Source along with the object code.  If the place to
          copy the object code is a network server, the Corresponding Source
          may be on a different server (operated by you or a third party)
          that supports equivalent copying facilities, provided you maintain
          clear directions next to the object code saying where to find the
          Corresponding Source.  Regardless of what server hosts the
          Corresponding Source, you remain obligated to ensure that it is
          available for as long as needed to satisfy these requirements.
      
          e) Convey the object code using peer-to-peer transmission, provided
          you inform other peers where the object code and Corresponding
          Source of the work are being offered to the general public at no
          charge under subsection 6d.
      
        A separable portion of the object code, whose source code is excluded
      from the Corresponding Source as a System Library, need not be
      included in conveying the object code work.
      
        A "User Product" is either (1) a "consumer product", which means any
      tangible personal property which is normally used for personal, family,
      or household purposes, or (2) anything designed or sold for incorporation
      into a dwelling.  In determining whether a product is a consumer product,
      doubtful cases shall be resolved in favor of coverage.  For a particular
      product received by a particular user, "normally used" refers to a
      typical or common use of that class of product, regardless of the status
      of the particular user or of the way in which the particular user
      actually uses, or expects or is expected to use, the product.  A product
      is a consumer product regardless of whether the product has substantial
      commercial, industrial or non-consumer uses, unless such uses represent
      the only significant mode of use of the product.
      
        "Installation Information" for a User Product means any methods,
      procedures, authorization keys, or other information required to install
      and execute modified versions of a covered work in that User Product from
      a modified version of its Corresponding Source.  The information must
      suffice to ensure that the continued functioning of the modified object
      code is in no case prevented or interfered with solely because
      modification has been made.
      
        If you convey an object code work under this section in, or with, or
      specifically for use in, a User Product, and the conveying occurs as
      part of a transaction in which the right of possession and use of the
      User Product is transferred to the recipient in perpetuity or for a
      fixed term (regardless of how the transaction is characterized), the
      Corresponding Source conveyed under this section must be accompanied
      by the Installation Information.  But this requirement does not apply
      if neither you nor any third party retains the ability to install
      modified object code on the User Product (for example, the work has
      been installed in ROM).
      
        The requirement to provide Installation Information does not include a
      requirement to continue to provide support service, warranty, or updates
      for a work that has been modified or installed by the recipient, or for
      the User Product in which it has been modified or installed.  Access to a
      network may be denied when the modification itself materially and
      adversely affects the operation of the network or violates the rules and
      protocols for communication across the network.
      
        Corresponding Source conveyed, and Installation Information provided,
      in accord with this section must be in a format that is publicly
      documented (and with an implementation available to the public in
      source code form), and must require no special password or key for
      unpacking, reading or copying.
      
        7. Additional Terms.
      
        "Additional permissions" are terms that supplement the terms of this
      License by making exceptions from one or more of its conditions.
      Additional permissions that are applicable to the entire Program shall
      be treated as though they were included in this License, to the extent
      that they are valid under applicable law.  If additional permissions
      apply only to part of the Program, that part may be used separately
      under those permissions, but the entire Program remains governed by
      this License without regard to the additional permissions.
      
        When you convey a copy of a covered work, you may at your option
      remove any additional permissions from that copy, or from any part of
      it.  (Additional permissions may be written to require their own
      removal in certain cases when you modify the work.)  You may place
      additional permissions on material, added by you to a covered work,
      for which you have or can give appropriate copyright permission.
      
        Notwithstanding any other provision of this License, for material you
      add to a covered work, you may (if authorized by the copyright holders of
      that material) supplement the terms of this License with terms:
      
          a) Disclaiming warranty or limiting liability differently from the
          terms of sections 15 and 16 of this License; or
      
          b) Requiring preservation of specified reasonable legal notices or
          author attributions in that material or in the Appropriate Legal
          Notices displayed by works containing it; or
      
          c) Prohibiting misrepresentation of the origin of that material, or
          requiring that modified versions of such material be marked in
          reasonable ways as different from the original version; or
      
          d) Limiting the use for publicity purposes of names of licensors or
          authors of the material; or
      
          e) Declining to grant rights under trademark law for use of some
          trade names, trademarks, or service marks; or
      
          f) Requiring indemnification of licensors and authors of that
          material by anyone who conveys the material (or modified versions of
          it) with contractual assumptions of liability to the recipient, for
          any liability that these contractual assumptions directly impose on
          those licensors and authors.
      
        All other non-permissive additional terms are considered "further
      restrictions" within the meaning of section 10.  If the Program as you
      received it, or any part of it, contains a notice stating that it is
      governed by this License along with a term that is a further
      restriction, you may remove that term.  If a license document contains
      a further restriction but permits relicensing or conveying under this
      License, you may add to a covered work material governed by the terms
      of that license document, provided that the further restriction does
      not survive such relicensing or conveying.
      
        If you add terms to a covered work in accord with this section, you
      must place, in the relevant source files, a statement of the
      additional terms that apply to those files, or a notice indicating
      where to find the applicable terms.
      
        Additional terms, permissive or non-permissive, may be stated in the
      form of a separately written license, or stated as exceptions;
      the above requirements apply either way.
      
        8. Termination.
      
        You may not propagate or modify a covered work except as expressly
      provided under this License.  Any attempt otherwise to propagate or
      modify it is void, and will automatically terminate your rights under
      this License (including any patent licenses granted under the third
      paragraph of section 11).
      
        However, if you cease all violation of this License, then your
      license from a particular copyright holder is reinstated (a)
      provisionally, unless and until the copyright holder explicitly and
      finally terminates your license, and (b) permanently, if the copyright
      holder fails to notify you of the violation by some reasonable means
      prior to 60 days after the cessation.
      
        Moreover, your license from a particular copyright holder is
      reinstated permanently if the copyright holder notifies you of the
      violation by some reasonable means, this is the first time you have
      received notice of violation of this License (for any work) from that
      copyright holder, and you cure the violation prior to 30 days after
      your receipt of the notice.
      
        Termination of your rights under this section does not terminate the
      licenses of parties who have received copies or rights from you under
      this License.  If your rights have been terminated and not permanently
      reinstated, you do not qualify to receive new licenses for the same
      material under section 10.
      
        9. Acceptance Not Required for Having Copies.
      
        You are not required to accept this License in order to receive or
      run a copy of the Program.  Ancillary propagation of a covered work
      occurring solely as a consequence of using peer-to-peer transmission
      to receive a copy likewise does not require acceptance.  However,
      nothing other than this License grants you permission to propagate or
      modify any covered work.  These actions infringe copyright if you do
      not accept this License.  Therefore, by modifying or propagating a
      covered work, you indicate your acceptance of this License to do so.
      
        10. Automatic Licensing of Downstream Recipients.
      
        Each time you convey a covered work, the recipient automatically
      receives a license from the original licensors, to run, modify and
      propagate that work, subject to this License.  You are not responsible
      for enforcing compliance by third parties with this License.
      
        An "entity transaction" is a transaction transferring control of an
      organization, or substantially all assets of one, or subdividing an
      organization, or merging organizations.  If propagation of a covered
      work results from an entity transaction, each party to that
      transaction who receives a copy of the work also receives whatever
      licenses to the work the party's predecessor in interest had or could
      give under the previous paragraph, plus a right to possession of the
      Corresponding Source of the work from the predecessor in interest, if
      the predecessor has it or can get it with reasonable efforts.
      
        You may not impose any further restrictions on the exercise of the
      rights granted or affirmed under this License.  For example, you may
      not impose a license fee, royalty, or other charge for exercise of
      rights granted under this License, and you may not initiate litigation
      (including a cross-claim or counterclaim in a lawsuit) alleging that
      any patent claim is infringed by making, using, selling, offering for
      sale, or importing the Program or any portion of it.
      
        11. Patents.
      
        A "contributor" is a copyright holder who authorizes use under this
      License of the Program or a work on which the Program is based.  The
      work thus licensed is called the contributor's "contributor version".
      
        A contributor's "essential patent claims" are all patent claims
      owned or controlled by the contributor, whether already acquired or
      hereafter acquired, that would be infringed by some manner, permitted
      by this License, of making, using, or selling its contributor version,
      but do not include claims that would be infringed only as a
      consequence of further modification of the contributor version.  For
      purposes of this definition, "control" includes the right to grant
      patent sublicenses in a manner consistent with the requirements of
      this License.
      
        Each contributor grants you a non-exclusive, worldwide, royalty-free
      patent license under the contributor's essential patent claims, to
      make, use, sell, offer for sale, import and otherwise run, modify and
      propagate the contents of its contributor version.
      
        In the following three paragraphs, a "patent license" is any express
      agreement or commitment, however denominated, not to enforce a patent
      (such as an express permission to practice a patent or covenant not to
      sue for patent infringement).  To "grant" such a patent license to a
      party means to make such an agreement or commitment not to enforce a
      patent against the party.
      
        If you convey a covered work, knowingly relying on a patent license,
      and the Corresponding Source of the work is not available for anyone
      to copy, free of charge and under the terms of this License, through a
      publicly available network server or other readily accessible means,
      then you must either (1) cause the Corresponding Source to be so
      available, or (2) arrange to deprive yourself of the benefit of the
      patent license for this particular work, or (3) arrange, in a manner
      consistent with the requirements of this License, to extend the patent
      license to downstream recipients.  "Knowingly relying" means you have
      actual knowledge that, but for the patent license, your conveying the
      covered work in a country, or your recipient's use of the covered work
      in a country, would infringe one or more identifiable patents in that
      country that you have reason to believe are valid.
      
        If, pursuant to or in connection with a single transaction or
      arrangement, you convey, or propagate by procuring conveyance of, a
      covered work, and grant a patent license to some of the parties
      receiving the covered work authorizing them to use, propagate, modify
      or convey a specific copy of the covered work, then the patent license
      you grant is automatically extended to all recipients of the covered
      work and works based on it.
      
        A patent license is "discriminatory" if it does not include within
      the scope of its coverage, prohibits the exercise of, or is
      conditioned on the non-exercise of one or more of the rights that are
      specifically granted under this License.  You may not convey a covered
      work if you are a party to an arrangement with a third party that is
      in the business of distributing software, under which you make payment
      to the third party based on the extent of your activity of conveying
      the work, and under which the third party grants, to any of the
      parties who would receive the covered work from you, a discriminatory
      patent license (a) in connection with copies of the covered work
      conveyed by you (or copies made from those copies), or (b) primarily
      for and in connection with specific products or compilations that
      contain the covered work, unless you entered into that arrangement,
      or that patent license was granted, prior to 28 March 2007.
      
        Nothing in this License shall be construed as excluding or limiting
      any implied license or other defenses to infringement that may
      otherwise be available to you under applicable patent law.
      
        12. No Surrender of Others' Freedom.
      
        If conditions are imposed on you (whether by court order, agreement or
      otherwise) that contradict the conditions of this License, they do not
      excuse you from the conditions of this License.  If you cannot convey a
      covered work so as to satisfy simultaneously your obligations under this
      License and any other pertinent obligations, then as a consequence you may
      not convey it at all.  For example, if you agree to terms that obligate you
      to collect a royalty for further conveying from those to whom you convey
      the Program, the only way you could satisfy both those terms and this
      License would be to refrain entirely from conveying the Program.
      
        13. Use with the GNU Affero General Public License.
      
        Notwithstanding any other provision of this License, you have
      permission to link or combine any covered work with a work licensed
      under version 3 of the GNU Affero General Public License into a single
      combined work, and to convey the resulting work.  The terms of this
      License will continue to apply to the part which is the covered work,
      but the special requirements of the GNU Affero General Public License,
      section 13, concerning interaction through a network will apply to the
      combination as such.
      
        14. Revised Versions of this License.
      
        The Free Software Foundation may publish revised and/or new versions of
      the GNU General Public License from time to time.  Such new versions will
      be similar in spirit to the present version, but may differ in detail to
      address new problems or concerns.
      
        Each version is given a distinguishing version number.  If the
      Program specifies that a certain numbered version of the GNU General
      Public License "or any later version" applies to it, you have the
      option of following the terms and conditions either of that numbered
      version or of any later version published by the Free Software
      Foundation.  If the Program does not specify a version number of the
      GNU General Public License, you may choose any version ever published
      by the Free Software Foundation.
      
        If the Program specifies that a proxy can decide which future
      versions of the GNU General Public License can be used, that proxy's
      public statement of acceptance of a version permanently authorizes you
      to choose that version for the Program.
      
        Later license versions may give you additional or different
      permissions.  However, no additional obligations are imposed on any
      author or copyright holder as a result of your choosing to follow a
      later version.
      
        15. Disclaimer of Warranty.
      
        THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
      APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
      HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
      OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
      THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
      PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
      IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
      ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
      
        16. Limitation of Liability.
      
        IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
      WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
      THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
      GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
      USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
      DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
      PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
      EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
      SUCH DAMAGES.
      
        17. Interpretation of Sections 15 and 16.
      
        If the disclaimer of warranty and limitation of liability provided
      above cannot be given local legal effect according to their terms,
      reviewing courts shall apply local law that most closely approximates
      an absolute waiver of all civil liability in connection with the
      Program, unless a warranty or assumption of liability accompanies a
      copy of the Program in return for a fee.
      
                           END OF TERMS AND CONDITIONS
      
                  How to Apply These Terms to Your New Programs
      
        If you develop a new program, and you want it to be of the greatest
      possible use to the public, the best way to achieve this is to make it
      free software which everyone can redistribute and change under these terms.
      
        To do so, attach the following notices to the program.  It is safest
      to attach them to the start of each source file to most effectively
      state the exclusion of warranty; and each file should have at least
      the "copyright" line and a pointer to where the full notice is found.
      
          <one line to give the program's name and a brief idea of what it does.>
          Copyright (C) <year>  <name of author>
      
          This program is free software: you can redistribute it and/or modify
          it under the terms of the GNU General Public License as published by
          the Free Software Foundation, either version 3 of the License, or
          (at your option) any later version.
      
          This program is distributed in the hope that it will be useful,
          but WITHOUT ANY WARRANTY; without even the implied warranty of
          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
          GNU General Public License for more details.
      
          You should have received a copy of the GNU General Public License
          along with this program.  If not, see <https://www.gnu.org/licenses/>.
      
      Also add information on how to contact you by electronic and paper mail.
      
        If the program does terminal interaction, make it output a short
      notice like this when it starts in an interactive mode:
      
          <program>  Copyright (C) <year>  <name of author>
          This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
          This is free software, and you are welcome to redistribute it
          under certain conditions; type `show c' for details.
      
      The hypothetical commands `show w' and `show c' should show the appropriate
      parts of the General Public License.  Of course, your program's commands
      might be different; for a GUI interface, you would use an "about box".
      
        You should also get your employer (if you work as a programmer) or school,
      if any, to sign a "copyright disclaimer" for the program, if necessary.
      For more information on this, and how to apply and follow the GNU GPL, see
      <https://www.gnu.org/licenses/>.
      
        The GNU General Public License does not permit incorporating your program
      into proprietary programs.  If your program is a subroutine library, you
      may consider it more useful to permit linking proprietary applications with
      the library.  If this is what you want to do, use the GNU Lesser General
      Public License instead of this License.  But first, please read
      <https://www.gnu.org/licenses/why-not-lgpl.html>.
      

      Edit Object Text

      Selected object

      Press Command/Ctrl+Enter to apply. In Author mode, double-click a button, field, label, or audio control to reopen this editor.

      Stack Wizards

      Create an ordinary editable Stackadia project from a guided professional structure.

      2

      Configure the project

      These choices create normal cards, objects, actions, and scripts.

      Interactive Presentation

      Choose a project type to begin.

      3

      Review and create

      The current project will be replaced after the normal save prompt.

      Storyboard

      Navigate and arrange cards visually.

      Choose a card.

      Asset Library

      Search built-in, project, global, and verified extension-pack assets.

      0 assets
      Ready.

      Starter Packs

      Use bundled and browser-local packs without embedding showcase stacks in Stackadia.

      Crop Image

      Project image

      Cropping replaces the project asset while preserving its ID, object references, actions, and scripts.

      Trim Audio

      Project audio

      Choose the retained range.

      Non-destructive references

      The trimmed WAV replaces the selected project asset without changing its ID, media objects, declarative actions, or scripts.

      Audio Recorder

      Create a project audio asset using the browser microphone.

      Ready to record. Browser and device permission prompts remain platform-controlled.

      Paint Studio

      Paint asset

      x 0 · y 0

      Timeline & Keyframes

      Selected object

      0 ms

      Selected Keyframe

      No keyframe selected.

      Tracks show position, size, opacity, and rotation. Each keyframe can define the easing used by the following segment. Move or resize the object, set a time, then capture, or edit the selected frame numerically.

      Motion Path

      Selected object

      Path Points

      Select a point to edit or reorder it.

      0 points

      Selected Point

      No point selected.

      Capture two or more object positions or derive points from an editable vector guide.

      The on-card overlay remains visible while this modeless editor is open. Smooth mode samples a Catmull–Rom curve; Auto-orient rotates the object along the path tangent.

      Media Production

      Non-destructive playback, caption, poster, preload, and marker settings.

      Source

      Select a media object.

      Non-destructive timing

      Captions / transcript

      Media Markers

      Selected media object

      When playback crosses a marker, Stackadia sends mediaMarker with the label and time.

      Permissions

      Set project policy, inspect the current browser state, and test hardware access on this device.

      Two permission layers: The project policy decides whether authored scripts may request a capability. The browser, operating system, origin, embedding policy, and available hardware make the final device-specific decision. Device tests run only when you press a Test button and stop camera or microphone streams immediately.

      Install and Offline Use

      Stackadia can operate as an installable Progressive Web App when served through HTTPS or localhost.

      Checking installation support...
      Checking offline cache...
      Checking browser storage...

      This file works on its own. A hosted copy can also be installed for offline use.

      Project Versions

      Create named project versions, compare changes, and restore useful milestones. Collaboration and handoff tools are available under Advanced.

      Project versions

      0

      Select one version to compare it with the current project, or two versions to compare them directly.

      Comparison

      Not compared
      Choose a snapshot comparison.
      Advanced — Collaboration & Handoff

      Comments

      Activity & handoff

      0 open
      The package will include the current verified XStack, comments, activity, and selected snapshots.

      Automatic Recovery

      Stackadia automatically keeps local recovery snapshots while you work. They are stored in this browser and do not replace your saved XStack file. You can also create a manual recovery backup before a risky change.

      Publish & Share

      Check the project, choose one output, build it locally, then send the file or copy a hosted link.

      Current projectProject
      Not checkedReadiness
      Editable XStackOutput

      1. Check

      Run Project Check before building a distribution copy.

      2. Choose an output

      3. Build & share

      No output built yet.

      Stackadia does not upload or host files in this phase. Player and Web App outputs remain development references and are outside the Stackadia 1.0 Standalone qualification. For a Web App, host the generated package yourself, then paste its HTTPS address above to copy the link.

      Remix & advanced options

      Start from a curated project or open the full deployment controls when you need multi-target release bundles, release metadata, support/privacy URLs, or detailed hosting settings.

      Advanced Deployment

      Standalone/XStack and the Lightweight Player form the Stackadia 1.4 Final release boundary. Web App export remains a frozen development reference.

      Project releaseRelease profile
      3Targets
      —Blocking errors
      —Warnings

      Export formats

      Current profile

      Review the available Player and Web App export profiles and readiness checks.

      5Shared runtime groups
      5Authoring-only groups
      RC / FrozenPlayer / Web scope

      Player and Web App exports use dedicated playback-only runtime boundaries and omit the authoring interface.

      Release profile

      Release targets

      Last buildNot built
      Bundle nameRelease.zip

      Distribution details

      Readiness

      Not checked
      Run Preflight to review release readiness.

      Export

      Preparing project deployment…

      Project packageScripts and binary assets are stored as separate verified files.
      Player exportA self-contained browse-only HTML application.
      Web appA ready-to-host web version with offline support.
      
      

      Accessibility Assistant

      Find, understand, and correct accessibility barriers while authoring.

      0Errors
      0Warnings
      0Advisories
      —Coverage

      Findings

      Not scanned
      Run Scan to review the project.

      Project Check

      Review project structure, layout risks, runtime references, browser support, accessibility, and export readiness.

      Application

      Stackadia is ready.

      Feature lock

      Stackadia feature set is locked at RAD R44.

      Browser support

      Checking browser support…

      Project compatibility

      No migration report yet.

      Accessibility preferences

      Export readiness

      Run the project audit before deployment.

      Project check results

      Not run

      Platform and hosted qualification

      Not run

      Exercises platform input, hosted origin and service-worker readiness, queryable permission and embedding-policy state, print readiness, the current project, and a temporary large-project fixture using the actual XStack, Player, and Web App builders. Hardware tests that would trigger a prompt remain explicit user actions. Your project content is not replaced.

      Run Qualification on each target browser and device before release.

      Settings

      Configure experience, appearance, saving, and editing preferences.

      Mode

      Reader is for using a stack. Author exposes every creator capability.

      Author · Developer

      Full-detail authoring emphasis with advanced tools and All Properties visible by default.

      Authoring Profile

      Choose interface emphasis, not capability. Every profile can use every authoring feature.

      Selecting a profile applies a matching workspace emphasis. You can still open any panel, tool, Script, data, extension, physics, animation, or design feature afterward.

      Authoring Defaults

      Choose application defaults for ordinary objects created from the Tools palette. Existing objects are never changed.

      Compact Desktop · 14 pt. Presentation and Touch retain their larger profile typography.

      Interface Appearance

      Choose Stackadia’s authoring chrome. Project themes remain separate.

      Dark appearance is active.

      Prismatic accents use restrained semantic color for wayfinding; content surfaces stay neutral.

      Files & Saving

      Choose where new stacks are saved when you use Save. Save As always opens the system save dialog when supported.

      Default Stack Folder

      No default folder selected.

      Checking browser file-system support…

      Editing Preferences

      Configure grid, keyboard nudging, and placement behavior used by Duplicate and Paste.

      Select Objects

      Select objects by type or name on the current edit layer.

      Languages

      Translate visible object text and preview reading direction.

      Translation table

      Components

      Reuse groups while keeping their structure, layout, appearance, and scripts.

      Inserted instances are linked to a shared definition. Exposed properties and variants allow safe per-instance customization that survives definition updates.

      Reusable Content Library

      Search offline assets, prefabricated controls, card templates, starter kits, and your saved components.

      Built-in items are self-contained and offline. Personal library items are stored in this browser and remain outside project files until inserted.

      Smart Objects

      Ready-made professional behaviors that generate ordinary editable Stackadia groups, objects, actions, scripts, and metadata.

      Configuration

      Select a Smart Object to configure.

      Generated output remains ordinary editable Stackadia content.

      Component Definition

      Configure exposed properties and variants.

      Exposed properties

      Variants

      Data Studio

      Manage local and read-only external data sources, tables, fields, records, relationships, queries, forms, and validation in one canonical model.

      Project dataLocal tables and records stored with this project.

      Tables

      0 of 0
      Page 1 of 1

      Fields

      Bulk edit filtered records

      Records

      Field Settings

      Configure lookup, computed, and conditional validation behavior.

      Computed values are view-only. Numeric formulas begin with = and support field tokens, +, −, ×, ÷, and parentheses. Other formulas act as text templates.

      Table Relationships

      Define parent-detail links and safe referential delete behavior.

      Record Access & Audit

      Preview record-level roles and review data changes stored with the project.

      Role fields contain comma-separated role names. Blank values remain unrestricted. Author mode always retains editing access.

      Audit history

      Import Mapping

      Map source columns to table fields before importing.

      Export Templates

      Save reusable CSV or JSON field selections.

      Fields

      Dashboard Builder

      Create an editable card containing query-backed metrics and chart graphics.

      Generated labels and rectangles remain ordinary Stackadia objects. Query metadata updates their displayed values in Browse mode.

      External Data

      Connect read-only JSON, CSV, or published Google Sheets data with explicit refresh and offline snapshot policies.

      Stackadia preserves the last successful snapshot when a refresh fails or the device is offline. The connector remains read-only.

      Not connectedCreate or select an external data connection.

      Query Builder

      Create reusable filters and sorted result sets without scripting.

      Conditions

      Combine up to 12 conditions. Legacy one-condition queries open here automatically.

      Sort priority

      Sort keys are applied from top to bottom.

      Create or select a query.

      Page 1 of 1

      Interaction Tests

      Record and replay Stackadia-level interactions and assertions.

      Semantic steps

      0 steps
      No test run.

      Application Flow Map

      Explore cards, navigation paths, script references, tests, and project dependencies.

      DeclarativeScriptTestedBroken

      Report & Print Designer

      Build query-driven printable reports using editable Stackadia data and objects.

      Form Builder

      Generate an editable, data-bound application interface on the current card.

      Source and layout

      Generated controls are ordinary Stackadia objects and remain fully editable.

      Fields

      Choose a table and fields.

      Host Functions Guide

      Browser, media, storage, permission, and secure-library functions.

      Resumable host functions

      put fetchText("https://example.com", 8000) into tText
      put fetchJSON("https://example.com/data.json") into tData
      put requestLocation(12000) into tLocation

      The script waits for the result and then continues in the same handler. Failures can be handled with try/catch.

      Files and clipboard

      put chooseFile("text/*", 1048576) into tFile
      put saveFile("notes.txt", tFile["text"], "text/plain") into tSaved
      put copyText(tFile["text"]) into tCopied

      File access always requires a user selection or confirmation. Read results include name, type, size, text, and data URL.

      Camera and microphone

      put capturePhoto(1280, 720, 30000) into tPhoto
      put recordAudio(3000, 20000) into tRecording

      Camera streams stop immediately after capture. Audio recording is limited to 30 seconds and returns embedded media data.

      Project storage

      put saveValue("highScore", 1200) into tSaved
      put storedValue("highScore", 0) into tScore

      Storage writes occur during suspended execution, so values can be read later in the same handler.

      Secure libraries

      put libraryNames() into tLibraries
      put libraryInfo("stackadia.standard") into tInfo
      put libraryCall("stackadia.standard", "hash", "Stackadia") into tHash

      Libraries offer a limited set of approved operations and cannot directly control the authoring interface.

      Timeouts and cancellation

      try
        put fetchText(tURL, 5000) into tText
      catch tError
        put tError into field "Status"
      end try

      Abort cancels pending browser requests, media streams, recordings, and library calls. Most host functions accept a final timeout argument in milliseconds.

      Script Modules

      Share reusable handlers and functions across the project.

      Select or add a module.

      Recent Script Performance

      Run project scripts to collect performance information.

      Script Runtime

      Project scripting: Stackadia Script 1.2

      Compatibility Report

      No report has been run.

      Extensions

      Install, approve, test, recover, and manage trusted project extensions.

      SDK 1 and SDK 2 workers remain isolated and never receive unrestricted DOM access.

      Project Dependencies

      0

      Activity

      No extension activity.

      Libraries & Services

      Review project dependencies, provider locks, permissions, offline support, and Player or Web App availability.

      Installation, project approval, and capability approval remain separate trust decisions.

      Project Dependencies

      0

      Service Bindings

      0

      Available Providers

      0

      Lifecycle Activity

      No library or service activity.

      Graphing Studio

      Build a structured graph request, preview the offline result, and insert SVG or PNG output into the current card.

      Structured Request

      JSON-like data

      Requests are schema validated, copied across the service boundary, and bounded to 12 series and 250 points per series.

      Preview

      Choose a sample and render it.

      The provider is available offline in Authoring, Player, and exported Web Apps.

      No result yet.

      Extension Studio

      Create, validate, and test a safe Extension SDK 3 starter kit with typed script-library operations.

      Starter Kit

      Requested capabilities
      The exported kit is unsigned and cannot be installed until it is signed by an approved publisher.

      Manifest Preview

      Worker Preview

      Alignment

      Select two or more objects
      Align
      Distribute & Size

      Align & Match: 2+ unlocked objects · Distribute: 3+.

      Themes

      Shared colors, type, spacing, borders, and control styles

      Theme Preview

      Typography and shared design tokens update themed controls.

      Background Designer

      Edit reusable shared backgrounds without changing the project theme. Themes supply design tokens; backgrounds supply the visual layer shared by cards.

      Ready-made backgrounds

      Start from a collection preset, then adjust any setting below.

      Preview

      The preview shows backdrop appearance only. Shared background objects remain editable on the Background layer.

      Object Templates

      Edit the defaults inherited by newly created objects. Existing objects are never changed.

      Script-created placement

      Controls where a script-created object appears when its create command does not include an at x,y position. Explicit coordinates always take precedence.

      Size and content

      Typography

      Default (System) follows Stackadia's normal project/system typography. Installed Fonts may request browser permission; Other… accepts a specific font-family name.

      Appearance

      State and object options

      Pattern Library

      Choose from 40 original seamless Stackadia patterns or a custom pattern asset.

      Registered Stacks

      A quick-launch registry for XStack projects. Register Stack saves a browser-library copy of the XStack you select; removing the registration does not delete the original file. Stackadia Home, Help, Tour, and Demo are protected core stacks and self-heal automatically. Physical backup copies of the core stacks are included with the development package.

      Navigation only: go stack resolves a registered title or stable project ID and opens that XStack as the single active project. Registered Stacks does not provide handler calls, shared variables, cross-stack object references, or message/event propagation.

      New Blank Project

      Start with one empty card. You can change these choices later.

      Want a head start?Stack Wizard and Starter Packs create ordinary editable Stackadia content.

      Learning Center

      Search help, follow guided lessons, and add editable examples.

      0 of 5 guided lessons completeRecommended topics reflect the current mode and selection.

      Help

      Authoring, scripting, saving, and sharing

      Stackadia Script Dictionary

      Search human-facing syntax and behavior reference for Stackadia Script 1.2.

      Script Tutorials

      Runnable examples for the current script owner

      Script Templates & Snippets

      Insert editable handler, control-flow, data, media, and interaction patterns.

      Stackadia Script Examples

      Run editable Stackadia Script examples and review compatibility guidance.

      Stackadia Script 1.2Compatible earlier syntax

      Examples cover Stackadia Script 1.2 and supported earlier syntax.

      Choose an exampleScript 1.2 coverage and compatibility guidance are checked automatically.
      Script 0.9

      Choose an example

      Select a searchable example to inspect its editable source and expected result.

      Run output will appear here.

      Project Menubar

      Create menus for the authored project. These menus are separate from the Stackadia application menubar.

      Menus

      Menu Items

      Selected Item

      Actions

      Project menus use structured data, controlled Actions, and the existing Stackadia message path. They cannot inject HTML or access the browser DOM.

      Stackadia Script IDE

      Current object

      Tools
      Learn
      Ln 1, Col 1No selectionObject scriptScript 1.0

      Script Test & Diagnostics

      Check current Script 1.2-compatible source without executing project behavior.

      Scripts tested0
      Errors0
      Warnings0
      Clean0
      Choose a scope and run tests.

      Message Box

      Run Stackadia Script immediately without adding a handler to the project.

      Ctrl/⌘+Enter Run · Alt+↑/↓ History
      Ready. Enter a Stackadia Script statement, or prefix an expression with = to inspect its value.

      Examples: go next card · set the visible of button "Continue" to false · = the name of this card. Immediate code runs through the normal Script 1.2 runtime but is not saved into the project.

      Stackadia Script Language Contract

      The stable compatibility boundary for Stackadia Script 1.2.

      Script 1.2 · Stable
      Language1.2
      Compatibility floor0.9
      Dictionary—
      Public messages—

      What Script 1.2 guarantees

      • The R131.3–R131.6.1 reconciled handler, expression, control-flow, chunk/reference, message-path, result, and custom-property semantics are the integrated Script 1.2 contract.
      • Scripts may belong to the project, card, background, group, object, or Script module surfaces already supported by Stackadia.
      • Declarative Actions and Script remain one event model: for the same object event, authored Actions execute before that object's Script handler.
      • The Message Box validates and executes through the same Script 1.2 runtime contract; temporary immediate handlers are never saved into project Script.

      Scope and naming

      Language scope is defined by the existing declarations and handler parameters. Stackadia's recommended authoring style is conventional rather than parser-enforced:

      • g* for global variables
      • t* for handler-local variables
      • p* for handler/function parameters
      • u* for project-defined custom properties exposed to Script

      These prefixes improve readability and LiveCode-family familiarity. They are style guidance, not additional syntax.

      Compatibility and versioning

      • The compatibility floor remains Stackadia Script 0.9. Existing supported 0.9, 1.0, and 1.1 project metadata remains loadable; the compatibility floor stays 0.9.
      • Additive host functions, object properties, public messages, and device/service APIs may grow without redefining the core grammar.
      • A breaking grammar change, incompatible meaning change, or removal of supported Script behavior requires a new Stackadia Script language version rather than a silent application-build change.
      • Diagnostic wording and documentation may improve while stable diagnostic identifiers and executable semantics remain the compatibility anchor where defined.

      Host and extension boundary

      Stackadia Script is the language; browser/device services and extensions are host capabilities. They may expose new callable operations through approved host boundaries, but an extension must not silently redefine Script 1.2 grammar, parser precedence, handler dispatch, or built-in semantics.

      Use the Script Dictionary for the executable catalog and Host Functions Guide for capability-specific host APIs.

      Script Intelligence & Event Map

      Search every script, inspect handlers, references, and declarative event actions.

      Enter a search term or choose Event map.

      Find Command

      Search commands, tools, studios, panels, workspaces, and windows by name.

      Ctrl/⌘K
      All commands

      Keyboard Shortcuts

      Search commands and conventional authoring shortcuts

      Transition Editor

      Preview and assign full-frame transitions for Browse navigation and authored navigation actions.

      BeforeOrbital Study
      AfterMountain Dusk

      Ready to prepare showcase artwork.