The help seems to be lacking for Request_Superfind. I've never used this in all my years of working with DF but the old app that I inherited does so I looked it up. The help specifies 1 argument of "mode" but the DF code shows that there are also file and field arguments and they aren't optional.

Code:
Procedure Request_Superfind  Integer eFindMode Integer iFile Integer iField
End_Procedure