ulink.show boolean ulink.show Display URLs after ulinks? If non-zero, the URL of each ulink will appear after the text of the link. If the text of the link and the URL are identical, the URL is suppressed. See also ulink.footnotes. DocBook 5 does not have an ulink element. When processing DocBoook 5 documents, ulink.show applies to all inline elements that are marked up with xlink:href attributes that point to external resources.