I apologize in advance if my question is too basic. I just discovered calibre and I would be seriously considering it as my default pc-reader if it wasn't for the lack of highlighting and commenting options.
I found an enhancement that seems to solve the problem (http://bugs.calibre-ebook.com/ticket/5171
). But I do not know how to apply the patch, as I don't find some of the files I should be modifying in my pc.
I would be very happy if anybody could hint me a bit on how to solve this, if possible.
All the best