I believe the context makes it clear what is meant. Obviously you can lift the pen, move it a bit, put it down and so on, and create a dotted/dashed line on a w

I believe the context makes it clear what is meant. Obviously you can lift the pen, move it a bit, put it down and so on, and create a dotted/dashed line on a whiteboard. The things here is that there's a technique to make the chalk "skip" on its own, by finding some kind of friction equilibrium/magic point while doing a normal stroke so you don't need to manually control the point of the chalk to form each dot. Really really cool.