Beside this, how do you do to embedd images of diagrams in your comments? Is there a trick?
Yes, there is a trick, and this is what the discussion is about. Just write a FEN of the position you want to show as part of your text, and surround it by 'tags' [ fen] and [/ fen] (without the internal space, which I just added here to prevent the word 'and' will be interpreted as a FEN of a 3x1 board).
E.g. [ fen]nqkrb/ppppp/5/PPPPP/NQKRB[ /fen] would give you:
Yes, there is a trick, and this is what the discussion is about. Just write a FEN of the position you want to show as part of your text, and surround it by 'tags' [ fen] and [/ fen] (without the internal space, which I just added here to prevent the word 'and' will be interpreted as a FEN of a 3x1 board).
E.g. [ fen]nqkrb/ppppp/5/PPPPP/NQKRB[ /fen] would give you: