| Level Design / Level Object Manipulation / Editing Object-Specific Properties / Contrails
| When a contrail is selected in the Levels Window, its properties may be edited using the Properties floating window (Command-0), as described below:
Contrail Name Field | Determines the name of the selected contrail
Contrail Type Pop-Up Menu | Determines the selected contrail's type. The Edit button may be used to edit the game project's contrail types, as described in the Contrail Creation section.
Location X and Y Fields | Determines the initial location of the selected contrail
Current Horizontal Speed Field | Determines the initial horizontal speed of the selected contrail
Current Downward Speed Field | Determines the initial downward speed of the selected contrail
| More information on contrails is available in the Elements of a Game section.