Avery Dennison 6037 Rev. AA 3/04 Programmer Manual - Manual (Page 46)

4-4 ROM-DOS Internal Commands
;
Internal Command
The semicolon (;) command has two purposes: to allow comments in a
batch or CONFIG.SYS file, and to temporarily disable a command without
physically deleting the command from the file. Refer also to the REM
command.
Syntax
; [any text here]
Remarks
Use the (;) command to functionally remove a command from the
CONFIG.SYS file without actually deleting it from the CONFIG.SYS file.
Example s
;C:\BIN\VDISK.SYS 64 /E
Prevents the VDISK command from executing until the (;) command is
removed.