We use a markup style system in a CMS. It works in a similar way to the system used for asking questions on stackoverflow (though it uses a different syntax).

I am curious if the text editing system used by stackoverflow (that I am typing into now) is a commercially available plug-in or if it was developed by the team.

What I really want to figure out how to do is add buttons for bold etc that manipulate the text inside the textarea, but I am having trouble tracking down suitable information. The URL button seems the most complicated, as it will renumber all the references throughout your text if needed...


You can download the editor here. And read up on the process here.

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  • That is exactly what I was looking for. I can spend the rest of the day looking though the code... :-) – Rik Heywood Nov 26 '09 at 14:34
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    On the page it says This repository is no longer maintained. Please use PageDown instead. here is the link github.com/ujifgc/pagedown – Adam Nov 17 '16 at 11:00

You can look at all tools used to build SO right here. As you can see, the editor WMD for Markdown is open source.

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