Dokuwiki 'commands' like 'login','register' etc are usually available through buttons in the interface. If you want to display them as links in your text you can add an interwiki namespace (file: interwiki.conf)

do     ./?do={URL}

in conf/interwiki.conf. You can then write links like

[[do>revisions]]

and it will show up as an interwiki link:
revisions
If you configured interwiki links to open in new windows, your 'command' links will open in a new window too

Pike 2005-Apr-29

E-Razor: You'll have to use these lines when not using mod_redirect:

do     ./doku.php?do={URL}