Problem description: Missing sets Steps to reproduce: 1. Try to use setP :-) Generally, there should be all the sets that used in computer engineering, right. setP for creating NPC set of complexity calculations, or setE for RE (not real, but, REgular like regular expressions...)

I agree. Another example would be setH, for Hamilton quaternions. N, Z, Q, R and C are only some basic sets which notation may require modified characters.

LaTeX has a command \mathbb to draw blackboard bold letters. A command "mathbb" could be added in the Formula Editor.

The correction of something like adding setp are 3 lines of code (litteraly, TSETP definition, the token list definition and a case above case TSETC). However the symbols for doing so are not available in the opensymbol font ( see tdf#134214 ). So for now there isn't anything I can do. Adding mathbb is a little more complicated, but possible as font attribute. However the problem stills the same. If tdf#134214 is solved I'll implement it.

Thanks, hope this shall be available soon.