End-mission
From FreeSpace Wiki
end-mission end-mission Ends the mission as if the player had engaged his subspace drive, but without him doing so. Dumps the player back into a normal debriefing. Does not invoke red-alert status. Takes no arguments.
Comments
This can be used along with distance-ship-subsystem to simulate carrier landings by ending the mission at a certain distance from the fighterbay subsystem. Another use is when you have no jump capable ships and want to simulate the player flying back to a mothership some distance away - In this case, you can use cutscene SEXPs to show the ship flying away into the horizon, then fade-out and end the mission with this SEXP to dump the mission into debriefing.