PMVER (10-digit signed integer)

Structure version number.

The value must be one of the following:

PMVER1

Version-1 put-message options structure.

PMVER2

Version-2 put-message options structure.

Fields that exist only in the more-recent version of the structure are identified as such in the descriptions of the fields. The following constant specifies the version number of the current version:

PMVERC

Current version of put-message options structure.

This is always an input field. The initial value of this field is PMVER1.