/BL[OCK]=block_number

Specifies the target block for MAPS. The /BLOCK qualifier is incompatible with the /RESTORE_ALL qualifier.

On commands with no /BLOCK= or /RESTORE_ALL qualifier, DSE uses the last block handled by a DSE operation. When no block has been accessed, that is, on the first block-oriented command, DSE uses block one (1).

/BU[SY]

Marks the current block busy in the block's local map and appropriately updates the master bitmap. The /BUSY qualifier is incompatible with all qualifiers except /BLOCK.

/F[REE]

Marks the current block free in the block's local map and appropriately updates the master bitmap. The /FREE qualifier is incompatible with all qualifiers except /BLOCK.

/M[ASTER]

Sets the bit in the master bitmap associated with the current block's local map according to whether or not that local map is full. The /MASTER qualifier is incompatible with all qualifiers except /BLOCK.

/R[ESTORE_ALL]

Sets all local bitmaps and the master bitmap to reflect the blocks used in the database file. Use /RESTORE_ALL only if the database contents are known to be correct, but a large number of the bitmaps require correction. The /RESTORE_ALL qualifier is incompatible with all other qualifiers.

	Caution
	The /RESTORE_ALL qualifier rebuilds all maps and should be used with a great deal of caution as it can destroy important information.