Interfaces to convert syntax?

Hi!

I never used CKEditor before, but am looking for a WYSIWYG which is also able to be extended in way that it stores custom syntax for the different elements.

I would like to integrate a WYSIWYG into different wiki-backends but HTML-output is not an option.

So what I would basicly like to do is to maintain a config file which translates things like:

<b> = **
</b> = **
<br /> = \\