The RANGE command finds all blocks in the database whose first key falls in the specified range of keys. The RANGE command may take a very long time unless the range specified by -FROM and -TO is small. Use FIND -KEY and/or FIND -KEY -EXHAUSTIVE first to quickly determine whether the key appears in the index tree.

The format of the RANGE command is:

        RA[NGE] -F[ROM]=block-number
                -T[O]=block-number
                -I[NDEX]
                -LOS[T]
                -[NO]C[RIT]
                -[NO]BU[SY]
                -S[TAR]
                -LOW[ER]=key
                -U[PPER]=key