xsky started out as a simple project  to  teach myself how to do programming
in the X Window System, and has  expanded  from there, though  it is not yet
capable of reading mail :-).  As such, the same type of thing may be done in
more than one way in different parts  of the code,  and there may be  better
ways of performing certain tasks.  The techniques  used  depended as much on
what I was trying  to learn at the time  as  on what was  appropriate to the
task.  If you have  any comments along these lines, I would be most happy to
hear them.

Because  of  the original intent of xsky  as a learning project, some of the
stuff in  the  resources file  is necessary  for proper  functioning of  the
program.  Be sure  you have the environment variable XAPPLRESDIR set to  the
directory path containing the supplied XSky file, or have otherwise arranged
for those resources to be included when you start xsky.

Cartographers may recoil in  disgust  at  the  manner  in  which the  sky is
projected onto the flat screen.  Knowing nothing about cartography, I simply
picked an obvious method, and it seems to work  very  well.  I also  solicit
comments along these lines, but be aware that I am going to request specific
information about what is wrong with a  given method and specific algorithms
for any suggested  changes; I know nothing about the subject myself (but  am
quite willing to learn).
