Adam Naumowicz wrote:

But there is one more missing (??) thing I have found. I just tried to use include and exclude procedures for sets (enums). I know that it can be replaced almost equivalently with assignment S:=S+[new element], but maybe these procedures should be implemented as above within your system unit.

Yes, they're listed on our To-Do list (http://agnes.dida.physik.uni-essen.de/~gnu-pascal/todo.html), as one of the few missing features to be implemented before the next release. Actually, Peter is already working on changes to the set handling code, and these routines will be part of the changes.

Frank