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The if and goto Commands
The if command is rather a conditional branch than what one usually calls an if. Its syntax is
if var op number goto label
where the expression must be a simple comparison between one of the
variables $errlvl, $locip, and $rmtip.
The second operand must be an integer number; the operator op may
be one of ==, !=, <, >, <=, and
>=.
The goto command makes the execution of the script continue at the line following that bearing the label. A label must occur as the very first token on the line, and must be followed immediately by a colon.
Andrew Anderson
Thu Mar 7 23:22:06 EST 1996