* get rid of hard-coded markup like e.g. { ... | ... } or [ ... ]
in favour of DocBook's proper tags
* use tags better matching the purpose,
e.g. use <filename class"directory"> instead of <command> for directories
* improve consistency in <replaceable>s
Experienced a problem with dnie-tool where I would receive a warning with the content of /etc/bash_completion.d/dnie-tool.
The cause of the error was a missing case label which in turn was caused by the formatting of the dnie-tool.1.xml.
Options were formatted like <term><option--xarg, -x</option></term> which were not handled by the sed regular expression in the makefiles.
Modified the dnie-tool.1.xml file to be consistent with the other doc files and to generate the dnie-tool file correctly.