I think it should be better if the <ulink url="./other.dia"/> becomes <link
href="./other.html"/> (or something like that) so you could link a image map
to another, and not only to a picture.
From: "W. Borgert" <debacle@debian.org>
> Links between
> dia files could be translated to image maps automatically on
> export to PNG (e.g.: <ulink url="./other.dia"/> becomes <link
> href="./other.png"/> - I forgot the exact syntax).