in reply to stop a .pl script from launching within a larger script

The comment character in sh is #: 
#!/bin/sh

run_me.pl
# dont_run_me.pl

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لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In Section Seekers of Perl Wisdom