Test that viewer implements the five variations on the allowable form of the "#" fragment for links.
At the start of the test, the right-hand frame should display some HTML text containing two strings, "Click to activate link with "#object-term" fragment." and "Click to activate link with "#picid.objid" fragment." Each has a hyperlink that points to a local WebCGM instance, that contains a single picture with a pair of cylinder objects.
In order to avoid the browser "#" fragment bug, the two links actually point into two identical copies of the file, with different filenames. (The same target file could be used for the two links, and the browser bug avoided, if another link to a different file were activated between the two test links.) Clicking on either hyperlink should cause the WebCGM picture to be displayed in the right hand frame, in place of the HTML text, and the right hand cylinder to be highlighted. The exact method of highlighting is viewer dependent.
You should be able to use the browser "Back" and "Forward" buttons to go back and forth between the HTML view and the WebCGM view in the right-hand frame. (Note, however, that this latter normal behavior is not part of the WebCGM standard, and it is not a pass/fail criterion for WebCGM viewers for this test.) If the "Back" button does not work properly, you will need to reload the test in order to access the other hyperlink.
The initial view in the left-hand frame is a PNG reference image of a correct rendering of how the target WebCGM instance should appear in the right-hand frame after activating either link in the HTML source instance. There should be no significant visual deviation between the reference image of the left frame and the view in the right frame after link activation, except for the method of object highlighting. The reference image shows one valid method -- the border is outlined in red. Any other visual highlighting method -- e.g., changing the color of the whole object -- is equally acceptable.