Where people come together, errors are made. In OFPEC's Beta Boards (ArmA, OFP) missions are tested by enthusiasts who help mission authors improve their missions. Beta reports are being written almost every day and some words might be unclear for some of the newcomers. An all important word is a showstopper, it has been misused in the past and miscommunications can be nasty. Therefore, a definition and example of the word showstopper have added to one of the stickies present in the Beta Boards.
Do you enjoy playing missions? Are you inclined to help people? Do you like new missions? Then you might want to visit the Mission Beta Boards. You are free to download missions, but I strongly recommend that you register an account and help the mission authors by writing beta reports. Remember, OFPEC: by the community, for the community!