CGI

The most significant difference between Pegasus ver.1.0 and ver.0.9 is in the
treatment of CGI.

In ver.1.0, CGI is merely one of special configuration of
 execution handler.

According to the standard configuration, the condition that a file is CGI program is as bellow:

execution flag is set for user `others'
file suffix is `http' or `html'
it is located in document space
the name is not begin with `.'

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