Here's a throw-back to S36 days and "POP" where the simple command "FILE AAA*" would display a list of the files, starting with AAA..... For me, it's a S36 procedure called "FILE" and contains: WRKOBJ OBJ(QS36F/?1R?) OBJTYPE(*FILE).
This gives me a fast reference to remind the correct file name and/or determine the presence of such a file.(i.e.:
"FILE TES*" will show all the TES***** files to remind which names have been used and which may need to be deleted, etc.