[LONG]
V-SYMBOL=Variable symbol
V-STYP=~
V-RET=~
V-TWOWORDS=TRUE: store on two consecutive words
V-FID=File identifier
V-OK=TRUE if successful
V-MASK=Mask
V-OFFSET=Offset in the request data block
V-MODE=Mode: DATA | STATUS | COMMAND | TRIAL
[SHORT]
V-STYP=~
V-RET=~
V-SYMBOL=~
V-TWOWORDS=~
V-FID=~
V-OK=~
V-MASK=~
V-OFFSET=~
V-MODE=~
