What exactly is a URL fragment?
An example is http://www.cgmopen.org/sample.cgm#myObj. This URL points to the graphical object “myObj” inside the file “sample.cgm” on the CGM Open server. The fragment is the portion of the URL address that follows the “#” character. It is specific to and should be handled by browser plugins or controls for the associated data type. All major browsers do not handle the fragment after the #-character correctly in all cases. This leads to a situation that either the MIME type was not recognized, or the CGM viewer would not get the full URL including the fragment.