Renaming the command to something that makes more sense as to what the command actually does. The command copies the current xy of the instantiated object back to its template, so that the object remains in the same place if the player walks away and despawns the object, and then comes back. "moveobjectoffscreen" implies that it might be taking the object and moving it physically to an off-screen location somehow.
* adds some constants for standard script names and messagebox types
* replaces some callstd calls with msgbox calls where equivalent
* replaces msgbox and callstd calls using raw digits with versions that use the constants
Didn't realize that this needed to be done as well for renaming OW sprites. The event_objects.h file has had its corresponding defines renamed and all references in all files to those defines have been relabeled.
