Occurrences of A in procedures P1 through P3:
A AT P1 THRU P3
Occurrences of A in lines 100 through 2000:
A AT 100 THRU 2000
Occurrences of A in MOVE and SET statements:
A MOVE SET
Occurrences of A in I/O statements:
A I-O
Occurrences of A in lines 120 through 340 inclusive:
A AT #120 THRU #340