I am beginning to clean up the links on my website , and would really like the vrls to match the page name.

For example, I have changed page_3 to read as the "Features" page.

Currently the vrl is : /index.php?main_page=page_3

I would prefer this page to be /index.php?main_page=features

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The goal is to get all my pages to match appropriately before installing an seo mod to really get them cleaned up proper. IE: mysite.com/features.php

If there is an easy way, plz let me know. Thanks!