[%# image: insert an in-line image, the width in cm is computed from
  #        the image width in pixels with a conversion factor tuned
  #        for the Athena document
  # ARGS:
  #     file  : path to image file, including extension
-%]
[% USE image "${site.url.images}/${file}" %]
[% ww = image.width / 80 %]
\includegraphics*[width=[% ww %]cm]{[% image.name %]}

