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From: "I'm_HERE" <walid...@gmail.com>
Newsgroups: alt.msdos.batch.nt
Subject: Re: REM in multi-line commands
Date: Wed, 11 Jan 2012 09:47:23 -0800 (PST)
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References: <jeiplr$js6$1@dont-email.me> <jek82q$srm$1@news.albasani.net>
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another solution with persistant stream:

http://stackoverflow.com/questions/8526946/commenting-multiple-lines-in-dos-batch-file/8533464#8533464