The following parameters will be substituted
in the command when it is executed:
<tt>
<b>%f</b> the page source as a temporary file
<b>%d</b> the attachment directory of the current page
<b>%s</b> the real page source file (if any)
<b>%p</b> the page name
<b>%n</b> the notebook location (file or folder)
<b>%D</b> the document root (if any)
<b>%t</b> the selected text or word under cursor
<b>%T</b> the selected text including wiki formatting
</tt>