From f09a116b9523093b87a2e0b976890b71c0f12f93 Mon Sep 17 00:00:00 2001
From: Simon Pieters Cache-Control
response header) when the ignore higher-layer caching is unset.
The user agent can also store the image data in a separatly from the list of available images.
+The user agent can also store the image data in a separately from the list of available images.
For example, if a resource has the HTTP response header Cache-Control: must-revalidate
,
the user agent would remove it from the list of available images but could keep the image data separately,