It must be some sort of templating language... that is: the server parses the html and replaces anything like "<?pp:...?>" with the results of either executing some code or evaluating some expression or variable. I can't say that I actually know what template engine it is that uses that syntax, though.
Ones that I am familiar with, though are often quite similar. Typical examples being things like "<? ... ?>", "<% ... %>", "<%= ... %>", "[- ... -]", "[+ ... +]", and so on and so on.
What you should be looking for is which handler is being used to handle these pages. You can probably find that in your httpd.conf.
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:Wq
Not an editor command: Wq
