History’s command line history is installed as a device driver to allow you to use it from languages other than SuperBASIC. The default device name is HIS and can be opened as an input pipe whenever a IO.EDLIN call is to be used.
The HIS_USE instruction allows you to rename this device name to any other three letter code, passed as a string. The use of the HIS device is beyond the scope of this book because it’s not necessary for SuperBASIC where the HIS_SET, HIS_SIZE and HIS_UNSET commands are available to handle it. Please refer to the original documentation!
The History device built into SMSQ/E uses the device name HISTORY and can therefore be used alongside this version of the History Driver. You cannot rename SMSQ/E’s version.