Half Moves?

One of my games says:
- Move 32
- Half Moves 3
What does the second line mean?
In this game it is 6 half-moves since anything was last captured.
For reference I'm talking about game 11236404

...Sorry I think I've managed to work it out for myself
The rule is the number of half-moves since a capture OR a pawn move.
(I think we're allowed 50 of them, then it becomes a draw.)
Issue closed I think.