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Asteroid/Comet 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 54.

   "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 56.

   "Asteroid/Comet 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 59.
                                                           
   Guide used to work,  by default,  on "fixed levels":  for example,
one went from a field of view of 20 degrees (at level 4) to one of 10
degrees (at level 5),  with no intermediate step.  You couldn't access
a "level 4.5, 15-degree" field of view; the best you could do was to
change level 4 or 5 to be equal to 15 degrees,  using the Set Level
Size option in the Settings menu (p. 31).

   Now,  by default,  "fixed levels" is turned off.  You can get to any
desired field of view by dragging a box open on the screen.  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.  However,  some
people liked the "fixed levels" option,  so a toggle for it remains
in the Extras menu.
                                  
   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
small dialog box where you can turn the dataset on or off,  change its
color,  set a magnitude limit, and so on.


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