The HP e3000 COBOL extensions are said to be unsupported by ACUCOBOL-GT when they are recognized at compile time but ignored at runtime. Such extensions, when present, cause the compiler to return a warning message indicating that this is an unsupported operation. They do not prevent the compiler from creating an object.
The following HP COBOL extensions are not supported by ACUCOBOL-GT in HP e3000 COBOL compatibility mode.
COBOLLOCK
COBOLUNLOCK
EXCLUSIVE
UN-EXCLUSIVE