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event;  if you set Guide to show,  for example,  a lunar occultation,
and the background turns bright blue,  you can reasonably expect not to
see that event.

   Finally,  there are two check-boxes for "Show Ground" and "Horizon   
Objects".  The first causes the "ground" to be shown in a solid
color. Again,  this can be useful for determining if an event is
visible;  if you turn "Show Ground" on,  and the event in question
is in the "ground" area,  you know you won't be able to see it.

   With "Horizon Objects" turned on,  Guide displays a few objects at  
the horizon such as trees,  houses,  cars,  streetlights,  and so
forth. This can provide a certain sense of scale.  It's also possible
to rearrange these objects and add new ones;  see the instructions in
the files HORIZON.DAT and OBJECTS.DAT for details. Some people
have done this in order to get a "horizon" that matches their actual
observing site.  This helps in planning observations (you can get a
better idea when the moon will rise from behind a certain hill) and
in orienting yourself properly.  (Unfortunately, figuring out the
azimuth to the objects in question can be a bit of a challenge.  You
can use a compass, or you can observe a star pass over an object at
a given time, then use Guide to determine the altitude/azimuth of
the star at that time.)

   By default,  the background is white in Chart mode and black in
Normal Color mode,  and the ground is a brownish-red color.  However,
three buttons are provided in the dialog box to adjust this. Each is a
blank rectangle showing the color in question;  click on one,  and you
get a color selection box.

8:  SETTINGS MENU                          

   The Settings menu lets you set such details as your position on
the earth (latitude, longitude and altitude),  epoch,  printer, and so
forth.

   The Settings menu looks like this:

Location
Time Dialog
Enter Time
Level 3: 45 degrees
Scope control
Level
Language
Margins menu
Formats
TLE=bright.tle
Projection
Toolbar

   In the Location dialog (page 34),  you can select your

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