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or perhaps the local sidereal time,  or some other time zone.  (Sidereal
time isn't normally thought of as a "time zone",  but treating it in
this manner can be useful.)
                                                            
   The "caption" refers to text you may wish to add to the legend area,
such as "Occultation of P17 by Pluto" or "Area around M-49".  This can
consume multiple lines if you wish.   Make sure that the caption is
turned on (by clicking on "Caption Off",  if necessary).  When you leave
the menu, the chart will redraw and the new caption will be shown.

   You also can change the "Layout" of the legend.  A "Vertical"
layout makes the legend much taller than it is wide;  a "Horizontal"
is wide. You can switch the legend between the bottom or top of the
chart,  and move it to the left, right,  or center. By default,
Guide uses a vertical layout in the bottom left.

7f:  Measurement Markings (Ticks,  Grids,  etc.)      

   The Measurement Markings menu controls the features to measure
positions and sizes in Guide.  The menu looks something like this:

Ticks
Grids
Side Labels
Hatches
Ecliptic                      
Horizon                       
Gal Equator                   
Telrad
Aperture                      
Central cross-hair
Border                        
                                  
   The first four items are called mensuration (measuring) marks. All
four provide measurement of right ascension and declination, just as
grids on terrestrial maps provide measurement of latitude and
longitude.  All four toggle to ON or OFF.  "Ticks" form cross-like
symbols chart showing where lines of RA and declination cross.  They
basically perform the same function as a real grid,  but aren't nearly
as intrusive.  "Hatches" are small marks on the side of the chart
indicating RA/dec intervals;  "side labels" are similar,  except that
they label the mark with the RA or dec of that position.  A little use
of all four markings will quickly make their natures apparent.

   Select any of these four,  and you will see a Spacing Menu for that
option.  This menu will look like this:

    [ ] Ticks on
* Automatic spacing
   declin  right asc
    1'        2s
 *  2'        5s

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