This is an idea for an /etc/mailcap entry for xmore, so for example

    see foo.txt

can run xmore.

I get some joy from the lines of debian/mime below which dh_installmime
can copy to /usr/lib/mime/packages/x11-apps

For the priority levels perhaps there should be some coordination
between more, less, xmore and nview as to which is better or equal in
quality.  But this is a start and a user can make their own order.

retitle 723718 suggest /etc/mailcap entry for xmore and xwud
thanks

xwud could also helpfully have a mailcap entry too.  New proposed
debian/mime file below.  xwud isn't the most sophisticated image viewer,
but xwd is its native format and on a minimal x11 install it could be
all that's available for xwd.