If you want to make the fonts in this package available to the X
server, then install the package x-ttcidfont-conf, add the directory

/var/lib/defoma/x-ttcidfont-conf.d/dirs/CID

to the font path in /etc/XF86Config(-4) or /etc/X11/fs/config.

Then also add the line

dir "/var/lib/defoma/x-ttcidfont-conf.d/dirs/CID"

to /etc/X11/XftConfig and restart X.

Please note that this package requires capable X server or font
server.  This means that you have to use the new modular X server from
the package xserver-xfree86.  Alternatively you can use some of the
`old' X servers but then you should make these fonts available to the
X server via font server.