Using a default

If an operand value has a default, letting the operand's value default or coding the operand's default has the same effect. For example, in the following definition statement for an application program with the name APPL01 the MAXPVT operand was not coded. VTAM® will assign the MAXPVT value at 0 because that is the default.
APPL01         APPL  APPC=YES,                                         X
               CMPAPPLI=4,                                             X
               CMPAPPLO=1,                                             X
               AUTH=(ACQ,PASS)
VTAM will also use the default if you code a null value for the operand. In the following example, the operand was coded without a value.
APPL01         APPL  APPC=YES,                                         X
               MAXPVT=