HTML Attribute for <IMG ...>
NOSAVE

Usage Recommendation
You can completely ignore this attribute. Don't use it for anything.

NOSAVE is an attribute used internally by Netscape Composer. It has no meaning to any program except for Netscape Composer, so you can ignore it completely. NOSAVE does not indicate an instruction to the browser to not cache or save the image.

Checking the 'Leave image at the original location' box in Netscape composer adds the NOSAVE attribute

<IMG DYNSRC="..."> >