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Commenting in Shell Script

Commenting Shell Script 
#!/bin/bash
echo "PreProcessing"
<<COMMENT_HERE
 whatever will go here
 and here .. 
COMMENT_HERE
echo "Further Processing"

--------- OR ---------

if false
then
    Everything else here for Testing!!!
fi
EDITED: Got more information here http://stackoverflow.com/questions/1444367/commenting-out-a-set-of-lines-in-a-shell-script
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