01
HTML documents
Uses the current Core parser, evaluator, document AST conversion, and HTML renderer.
BROWSER PLAYGROUND
Try a document as HTML.
This prototype runs Matra documents with the current v0.3 Core browser API and renders an HTML preview. Execution runs in a Worker and stops after 10 seconds if it does not respond.
HTML mode only. Focused SVG/MathML demos are on the examples page. Dedicated Math APIs and JavaScript module imports are out of scope.
HTML PLAYGROUND
Edit and run Matra
Execution requires an explicit action. A Worker can be stopped, and output is shown in a sandboxed iframe with scripts and network access disabled.
MATRA DOCUMENT
Matra document
Runs Matra HTML documents only. JavaScript is not executed; this is not a general-purpose security sandbox.
HTML preview
Run the document to update the HTML preview.
Prototype scope
HTML only, with explicit execution.
02
Stop the Worker
The Worker is terminated by the stop button or a 10-second deadline. Syntax and runtime errors are shown on the page.
03
Explicit limitations
JavaScript, SVG, Math, copy/download, and a general-purpose sandbox are not provided. The preview restricts scripts and network access.
v0.3 plan →Experimental
This is not a safe execution environment for untrusted code.
Worker termination and iframe restrictions are not a general-purpose security sandbox. Do not run untrusted source or input containing sensitive information.