/UNITS[=keyword]
    Specifies whether the amount of disk space reported by certain
    utilities is to be displayed in blocks or bytes. Keyword options
    are:
    Keyword      Explanation
    BLOCKS       Displays disk space in blocks.
    BYTES        Displays disk space in bytes.
    Blocks is the default until /UNITS is set to BYTES. If you
    specify /UNITS with no keyword, disk space is reported in blocks.
    Displays that are affected by changing the value of /UNITS
    include output from certain forms of the following commands:
    COPY, DELETE, DIRECTORY, PURGE, SHOW DEVICE, SHOW MEMORY, and
    SHOW QUOTA. Note that input to these commands can be specified
    only in blocks. The DIRECTORY, SHOW DEVICES, and SHOW MEMORY
    commands have a qualifier that lets you override the default SET
    PROCESS/UNITS setting for a single command.