man.base.url.for.relative.links string man.base.url.for.relative.links Specifies a base URL for relative links [set $man.base.url.for.relative.links]/ For any “notesource” listed in the auto-generated “NOTES” section of output man pages (which is generated when the value of the man.endnotes.list.enabled parameter is non-zero), if the notesource is a link source with a relative URI, the URI is displayed in output with the value of the man.base.url.for.relative.links parameter prepended to the value of the link URI. A link source is an notesource that references an external resource: a ulink element with a url attribute any element with an xlink:href attribute an imagedata, audiodata, or videodata element If you use relative URIs in link sources in your DocBook refentry source, and you leave man.base.url.for.relative.links unset, the relative links will appear “as is” in the “Notes” section of any man-page output generated from your source. That’s probably not what you want, because such relative links are only usable in the context of HTML output. So, to make the links meaningful and usable in the context of man-page output, set a value for man.base.url.for.relative.links that points to the online version of HTML output generated from your DocBook refentry source. For example: <xsl:param name="man.base.url.for.relative.links" >http://www.kernel.org/pub/software/scm/git/docs/</xsl:param> man.endnotes.list.enabled