This attribute holds the name of the image file. It must not contain the file path. It must be used instead of fileref for files associated with the article, which will always be either in the same directory as the main XML file, or be in another known location.

Defined in shared attribute group: "File Reference Attributes"

This attribute is not required. It has text content.

The DTD contains the following attribute definition (note that embedded links are to definitions within the DTD page of this guide):

                filename                 CDATA  #IMPLIED