/F[ROM]=block_number
Specifies a starting block number for the range search.
By default, RANGE starts processing at the beginning of the file.
/T[O]=block-number
Specifies an ending block number for the range search. By default, RANGE stops processing at the end of the file.
/I[NDEX]=block-number
Restricts a search to index blocks.
/LOS[T]=block_number
Restricts a search to blocks not found by a FIND /BLOCK.
/LOW[ER]=key
Specifies the lower bound for the key range.
/[NO]BU[SY]=busy/free
Restricts a search to either BUSY or FREE blocks.
/[NO]C[RIT]
Allows DSE RANGE to work even if another process is holding a critical section. Since results in this mode may be inconsistent, it should only be used if the critical section mechanism is not operating normally.
/S[TAR]=block-number
Includes index blocks that contain a single star key.
/U[PPER]=key
Specifies the upper bound for the key range.