I removed the period from the G-code to insert label for consistency. I also added a third option to this called "Skip layers". This allows you to insert gcode with a specific number of layers skipped (i.e. skip layers 1 will insert gcode every other layer, skip layers 3 will insert every fourth).
As an example, this change allowed me to insert a nozzle cleaning routine in my gcode without having to run it EVERY layer.
09d1becf1e