Avery Dennison 6037 Rev. AA 3/04 Programmer Manual - Manual (Page 81)

ROM-DOS Internal Commands 4-39
I F
Batch File Command
The IF subcommand allows conditional execution of commands.
Syntax
IF [NOT] condition command
Remarks
The condition may be any one of the following:
ERRORLEVEL number
string1 == string2
EXIST [drive:][path]filename
If the condition is true, then the command is executed. Otherwise the
command is bypassed, and the next command in the batch file is
executed. The [NOT] option tests the opposite of any condition.
The ERRORLEVEL number is true if the last program to execute had an
exit code equal or greater than number. Using the [NOT] option with this
condition tests if the exit code is less than the number argument.
The condition string1 == string2 is only true when string1 and string2 are
identical. The strings must match exactly; uppercase/lowercase
mismatches are not allowed. Applying the [NOT] option creates a
condition that is true only when the strings are not identical.
The EXIST filename is true if the specified filename is found. Wildcard
characters are allowed in the filename. The [NOT] EXIST condition is
true when the filename cannot be found.