@dc42 thanks for your answer.
Are layer comments the same for every slicer?
Could you answer two more questions, please:
How DWC determines layer change?
If I'll place any G-command (one or block of commands) with summary Z, DWC will take it, divide per layer height, then show me correct info? You wrote, that it looks for Z moves , so, it looks like "last Z" minus "pre-last Z" = "layer height" for DWC, then "last Z" / "layer height" = "layer quantity"?
