1 Map boundaries
With the settings of „Map properties“ and the button „Edit Boundaries“ you can set the boundaries for your map. If you have small levels, you can bound the level to certain areas, so the camera can't move out of it. This is helpful, if the floor textures are too small to fill the completely level.
You can switch the map boundaries on and off with the option „ Map/Cam bounds“ in the task bar at the lower end of the screen.