persona

    OpenVMS usage:persona
    type:         longword (unsigned)
    access:       read only
    mechanism:    by reference
    Address of a longword containing the persona identification for
    which $PERSONA_DELETE_EXTENSION calls the registered Extension
    Delete function.

 extensionID

    OpenVMS usage:extension_ID
    type:         longword (unsigned)
    access:       read only
    mechanism:    by reference
    Address of a longword containing the extension identification
    (EID) for which the registered DELETE routine is called in order
    to delete a persona extension block from the specified persona.