Refer to NotePad++ source code for the full list of these special characters,
https://github.com/notepad-plus-plus...ew.h#L123-L245
These 2 tables include every thing you need to
handle in custom way, with either
Unicode render able char by using a supported font or use your own, but most of them if not all to my knowledge do have printable glyph representing them (of course not any font does have these glyphs).