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DSS/RealSky Images
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Get Star Catalog data
Asteroid options
Fixed levels
Toggle user datasets
Make PostScript file
Make .BMP File
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Find conjunction
Show eclipse
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Install to hard drive

   The "DSS/RealSky Images" option leads to a dialog box in which
images from the Digital Sky Survey and RealSky datasets can be
extracted and their display controlled.  This is discussed in detail
starting on page 55.

   "Get Star Catalog data" provides some options to access several
truly immense star catalogs,  and to control their display.  This
is discussed starting on page 57.

   "Asteroid Options" provides control over how asteroids and comets
are displayed.  You can also reach it when you right-click on an
asteroid,  then on Display... Options.  It is discussed on page 62.
                                                           
   By default,  Guide works on "fixed levels":  for example, one goes
from a field of view of 20 degrees (at level 4) to one of 10 degrees (at
level 5),  with no intermediate step.  You can't access a "level 4.5,
15-degree" field of view; the best you can do is to change level 4 or 5
to be equal to 15 degrees,  using the Set Level Size option in the
Settings menu (p. 31).

   The way to get around this clumsiness is to turn Fixed Levels off.
When you do this,  dragging a box open on the screen lets you choose a
continuously varying field of view,  instead of jumping from one level
to another.  You can still "go to level 4" to get a 20-degree field of
view,  and other aspects of zooming in and out are unaffected. The only
real change is that you can get those intermediate fields of view.
                                  
   The "Toggle user datasets" opton is slightly misleading.  In reality,
Guide already contains a number of datasets in the user dataset system,    
including catalogs of galaxies,  quasars,  radio objects,  nearby stars,     
the Palomar survey plates,  and so forth.  These were originally
intended as examples,  but many Guide users have submitted useful
datasets that are now incorporated into the program.

   Hitting "Toggle user datasets" brings up a list of these datasets,
plus any you may have added using the instructions on the Project Pluto
Web site.  You can click on those you wish to change.  You'll get a

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