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@url PDF Output FormatIf the ultimate purpose of a PDF is only to be viewed online, perhaps
similar to HTML in some inchoate way, you may not want the urls to be
included in the visible text (just as urls are not visible to readers
of web pages). Texinfo provides a PDF-specific option for this, which
must be used inside @tex:
@tex \global\urefurlonlylinktrue @end tex
The result is that @url{http://www.gnu.org, GNU} has the
visible output of just ‘GNU’, with a link target of
http://www.gnu.org. Ordinarily, the visible output would
include both the label and the url: ‘GNU (http://www.gnu.org)’.
This option only has effect when the PDF output is produced with the
pdfTeX program, not with other ways of getting from Texinfo to PDF
(e.g., TeX to DVI to PDF). Consequently, it is ok to specify this
option unconditionally within @tex, as shown above. It is
ignored when DVI is being produced.