Upon executing a WFL job it would check to determine if the object was compatible with the OS version .
Because some OS interfaces may change from release to release , Medium Systems WFL code included a copy of the source in the object file .
Upon executing a Medium Systems WFL job it would check to determine if the object was compatible with the OS version .
Because some OS interfaces may change from release to release , Medium Systems WFL code included a copy of the source in the object file .