- comment on why the case exists,
- add an M2 at the end to later allow automatic simulation stop,
- move comments to the end to avoid filling the serial buffer with
stuff unrelated to movements,
- make sure there's a line ending at the end of the file and
- use Windows line endings (they're more difficult to handle).
Moves which have no movement intention, e.g. pure feedrate changes,
and moves too small to cause a single step, are a bit tricky to
handle with lookahead. Essentially, they should be joined with the
next movement, without queueing them up.
Markus Hitter