What is the precedence of index pages?

Index pages are the initial page Apache will use when the site is accessed without a filename, e.g. http://somesite.com/
The order in which the index files are searched is:

index.html index.htm index.shtml index.cgi index.php index.php3 index.php4 index.pl index.jsp index.ttml index.pm index.py

with index.html of the highest precedence and index.py the lowest (last to be used).

Given a site with an index.htm, index.shtml, and index.php - accessing http://somesite.com/ will really be accessing http://somesite.com/index.htm