in reply to Called by Require or Not

In addition to the answers you'll get regarding caller, also consider that with the right .htaccess directives, you can also make a URL illegal to fetch, returning a 404 or 403 error. For example:
<Files *.pl> order allow,deny deny from all </Files>
in an .htaccess file denies all access to .pl files. (I'm doing this from memory, but the syntax is at least similar to that.) </code>

-- Randal L. Schwartz, Perl hacker
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