Help: /pikchrshow
Bounty program for improvements to Tcl and certain Tcl packages.

The "/pikchrshow" page:

A pikchr code editor and previewer, allowing users to experiment with pikchr code or prototype it for use in copy/pasting into forum posts, wiki pages, or embedded docs.

It optionally accepts a p=pikchr-script-code URL parameter or POST value to pre-populate the editor with that code.