CONFIG PICTURE CACHE_ON | CACHE_OFF
CONFIG PICTURE CACHE_ON or CONFIG PICTURE CACHE_OFF are the only valid PICTURE config statements. Any other values or no values will be rejected.
CACHE_ON means that any pictures referenced on the client will be locally cached according to their file name.
If CACHE_OFF is in effect, all picture references are freshly retrieved from the server even if they happen to exist on the client.
Client picture caching defaults to ON.
For information on how pictures can be output (displayed) see Picture.