"Modify Apache Memory Usage Limit" in WHM
I got curious and clicked on "Modify Apache Memory Usage Limit" under Security in WHM.

Apache Limiter by cPanel, Inc.
Checking for BSD Accounting ....
Calculating Memory Limit .......1033064..516532..1052248..867281..444047360..
..148015786..
Largest Webserver child cgi/ssi/php is now limited to 141 meg
Checking for BSD Accounting ....
Calculating Memory Limit .......1033064..516532..1052248..867281..444047360..
..148015786..
Largest Webserver child cgi/ssi/php is now limited to 141 meg