Many of the Wiki articles are equally applicable to both BBC BASIC for Windows and BBC BASIC for SDL 2.0 but quite a few (generally those which involve calls to the Windows API) are appropriate for BB4W only.
There will often be a near equivalent solution for BBCSDL, but it would be entirely impractical for me (or anybody else) to work through the entire Wiki looking for such cases and modifying the articles accordingly.
So realistically additions and modifications to the Wiki to suit BBC BASIC for SDL 2.0 will only be made on an 'as required' basis. If you encounter such a situation, and don't feel confident to make the necessary changes yourself, please contact me.
I most recently made just such a change to Copy Key functionality with GET and INKEY which now includes code for both BB4W and BBCSDL.