You can also define aliases known as ERSATZ devices, which appear syntactically like real device-units, but allow you to effectively give an alternate name to a specific directory.

SYS: = DSK0:[1,4]

CMD: = DSK0:[2,2]

BAS: = DSK0:[7,6]

MYSRC: = DSK1:[300,111]

Given the above ersatz device definitions, SYS: would be equivalent to DSK0:[1,4], etc. Note that the first several ersatz definitions in the ERSATZ.INI file are essentially standardized (SYS:, CMD:, BAS:). Also note that while ERSATZ device names are syntactically similar to real device-unit names, the rules are relaxed somewhat. They don't have to contain any numeric digits, and they can be up to 10 characters long.

See the complete list of standard ersatz devices in the Ersatz Definition Files topic.