VSLA, Type, VLKEY
Selects those volumes containing the selected areas.
TypeLabel identifying the type of volume select:
S  | —  | Select a new set (default).  | 
R  | —  | Reselect a set from the current set.  | 
A  | —  | Additionally select a set and extend the current set.  | 
U  | —  | Unselect a set from the current set.  | 
VLKEYSpecifies whether all contained volume areas must be selected [ASEL]:
0  | —  | Select volume if any of its areas are in the selected area set.  | 
1  | —  | Select volume only if all of its areas are in the selected area set.  |