Squid defaults to deny GET and HEAD requests with request entities,
	as the meaning of such requests are undefined in the HTTP standard
	even if not explicitly forbidden.

	Set this directive to on if you have clients which insists
	on sending request entities in GET or HEAD requests. But be warned
	that there is server software (both proxies and web servers) which
	can fail to properly process this kind of request which may make you
	vulnerable to cache pollution attacks if enabled.