Mark [flag:Bool]
Mark object. Marks the current object. If the flag is specified as False, unmarks it instead.
Version Differences: This command is also available for ufos, ion storms, and minefields since PCC2 1.99.13. Older versions and PCC 1.x only allow it for ships and planets.
Since: PCC 1.0.5, PCC2 1.99.9
See also: Unmark, Minefield Commands, Planet Commands, Ship Commands, Storm Commands, Ufo Commands
