- Print image
- In multiple image mode, allow to save and export only the current image
- Clicking an item in the TikZ commands dock widget should not insert
  it, but only select it.  Pressing an Insert button would then do the
  actual insertion.  There should also be a Help button which opens the
  TikZ manual at the page where the selected item is explained.
- Make the XML file with the TikZ commands "localisable" (an XML file
  for each translation?)
- Make a graphical tool for editing the XML file containing the TikZ
  commands similar to keditbookmarks
- Create a new process for each window opened by the "New" action.
- Complete tikzcommands.xml:

  The following sections of the TikZ manual are implemented:
  Section 13 complete (except \pgfextra)
  Section 14 almost complete (except preaction=<options>, postaction=<options>,
    decorate, decoration=<zigzag/...>)
  Section 15 partially