On 23/03/2008, John W Foster johnwfoster@verizon.net wrote:

I am wondering if there is an extension or other means of determining when an extension is installed and what pages/articles are dependent upon it. I see listed at the bottom of pages being edited, the needed templates & sometimes other things. Is there a way to tell what extensions a page requires? If one is using some pages or templates from other wiki sites it would be very helpful to also know what extensions are required to make that page look correct.

[[Special:Version]] will tell you what extensions are installed. It won't say where they're used, though - I don't know of anything that will (other than looking at the wikitext).