The following words are reserved in IBM DOS/VS, but not in ACUCOBOL-GT. They are, however, treated as reserved words by ACUCOBOL-GT when it is in the IBM DOS/VS COBOL compatibility mode. You need to avoid using any of the IBM DOS/VS-specific reserved words as user-defined words.
ACTUAL
BEGINNING
C01
C02
C03
C04
C05
C06
C07
C08
C09
C10
C11
C12
COM-REG
CORE-INDEX
CSP
CURRENT-DATE
CYL-INDEX
CYL-OVERFLOW
DISPLAY-ST
EJECT
ENDING
ENTRY
EXAMINE
EXTENDED-SEARCH
FILE-LIMIT
MASTER-INDEX
NOMINAL
NOTE
OTHERWISE
PASSWORD
POSITIONING
PROCESSING
S01
S02
S03
S04
S05
SEEK
SKIP
SORT-CORE-SIZE
SORT-FILE-SIZE
SORT-MODE-SIZE
SORT-RETURN
SUPPRESS
SYSPCH
SYSPUNCH
TALLY
TIME-OF-DAY
TRACK-AREA
TRANSFORM
WHEN-COMPILED
WRITE-ONLY
WRITE-VERIFY