Allow each command to define an error string, access it when there is a Syntax Error.

[22samurai]

Instead of just writing "SYNTAX ERROR" when the command doesn't work as expected, provide a short message that shows the usage of the command.

Each command would hold a string at the beginning or end that contains the error message, which the PATH program would access (using absolute address location or running the CMD with a flag to show the usage message).

Example:

] COPY A B

USAGE ERROR: COPY <FILE1>, <FILE2>

]COPY  A, B
]REM SUCCESS