Mhhh ... translating Markdown -> HTML directly using JavaScript in the webbrowser is a good idea. Showdown does have BSD license. But "PageDown" seems like a better option. It is MIT and comes with an editor too. One can try it here: http://pagedown.googlecode.com/hg/demo/browser/demo.html Would allow to view tutorial pages written in markus as HTML in the webbrowser and provide an "edit" mode with an online editor. After editing the markdown can be sent back to the Pharo image and stored as markup in methods/classes (to package it with usual tools). Thx Torsten