|You can completely ignore this attribute. Don't use it for anything.|
You will occasionally see
Copyright 1997-2002 Idocs Inc. Content in this guide is offered freely to the public under the terms of
the Open Content License and the Open Publication License.
Contents may be redistributed or republished freely under these terms so long as credit to the original creator and
contributors is maintained.
NATURALSIZEFLAG when you view the code of some documents. This attribute is used
internally by a (now defunct) program called PageMill, a popular HTML editor.
NATURALSIZEFLAG has no meaning otherwise,
and you don't need to use it for anything.