With this session parameter, you specify the filler character which
                          will appear on either side of a group heading produced by a
                          DISPLAY statement
                          across all field columns that belong to that group. 
               
| Possible settings | any character | Filler character for group headers. | |
|---|---|---|---|
| Default setting | blank | ||
| Specification within session | yes | ||
| Applicable statements | |||
| Applicable command | none | ||
Note:
Unlike the FC parameter, which applies
                             to individual columns, the GC parameter applies to
                             headings across a group of columns.
                  
DISPLAY (GC=*)