Switches grid snapping on and off.
Turns grid rendering on and off.
Opens the Goto Brush/Entity dialog.
Opens the World Info dialog:
Opens the Entity Report dialog.
Checks for problems in the map architecture and opens the Map Error Report dialog if problems were found.
Selects the world object (and therefore recursively all map objects) and opens the Inspector dialog to show the properties of the map world entity.
Loads a pointfile into the map (see Dealing with Leaks for more details).
Removes a previously loaded pointfile.