General inquiry function

                    +--------------------------------+
                    | CALL  IGQWK (IWKID,PNAME,RVAL*) |
                    +--------------------------------+
Action: This routine inquires the values of attribute PNAME and returns it into RVAL. Parameter Description:
IWKID
Workstation identifier.
PNAME
Attribute name.
RVAL
Returned value. See the description below. 

+---------+---------------------------------------+--------------------------+
+-PNAME---+------RVAL-description--------+-RVAL-dimension--+
| 'MXDS'  | Maximal display surface (XMAX YMAX)   |            2             |
| 'NTNB'  | Current NT number                     |            1             |
| 'NTWN'  | Current window parameter              |            4             |
| 'NTVP'  | Current viewport parameter            |            4             |
| 'DVOL'  | Display volume in 3D                  |            3             |
|         |                                       |                          |
| 'ACTI'  | 1. if IWKID is active, 0. if not      |            1             |
| 'OPEN'  | 1. if IWKID is open, 0. if not        |           11             |
+-'NBWK'--+-Number-and-list-of-open-workstations--+-----------11-------------+

Table:  Description of the  IGQWK parameters



 [tab-IGQWK]