1. Load the editor with the map of your choice.
2. Place a unit down anywhere with "CONTROL: Player".
3. In the unit's initialization type "hint str getPos player;"
4. Click preview.
5. Count the number of digits each array entry has.
6. Move the unit and repeat the test.
---- OR ----
1. Load the editor with the map of your choice.
2. Move the cursor around while observing the bar at the bottom of the screen which shows your cursor's current position in [x,y,z]