QUIT:  Do you want to exit
this program?
---
HELP ON:  each click on a menu
item will display  an explana-
tory message before performing
the requested action.
---
HELP OFF: disables the HELP ON
function   -   no  explanatory
messages will be displayed.
---
IDENTIFY:  clicking  the mouse
on  a  star  will  display its
data  (ID,  visual  magnitude,
color index, and coordinates).
---
CENTER:  clicking the mouse in
the  map area will  define the
next  map   projection  center
(rounded to the   nearest grid
node).
---
POINT:  clicking  the mouse
on a point will display its
coordinates.
---
REDRAW: redraws the map with
all  the  settings   (frame,
projection, magnitude range,
scale and projection center)
as  currently set.
---
FLIP: redraws the map with
the center opposite to the
one  currently  set,   and
with  the  scale value not
greater than 2.
---
FIND:   inputs the 6-character
star ID (an asterisk serves as
a  wild  character,  replacing
any  other)   and   finds  the
brightest star matching it.
---
FIND NEXT: finds the next star
matching the last defined ID.
---
SCALE:    re-defines  the  map
scale; the value of 1  corres-
ponds to the  whole hemisphere
(or sphere) filling  the  win-
dow  as tightly as possible.
---
EQUATORIAL: re-defines the
coordinate   system   (for
subsequent maps) to
ë - declination,
à - right ascension.
---
ECLIPTIC: re-defines the coor-
dinate system  (for subsequent
maps) to
á - celestial latitude,
Ä - celestial longitude.
---
GALACTIC: re-defines the coor-
dinate system  (for subsequent
maps) to
b - galactic latitude,
l - galactic longitude.
---
HORIZON: re-defines the coor-
dinate system (for subsequent
maps) to
H - altitude,
A - azimuth.
---
MAGNITUDE:   only  stars  with
magnitudes from the  indicated
range will be  mapped  by  the
subsequent REDRAW actions (and
made accessible for FIND).
---
STEREOGRAPHIC: this projection
will  be  used  for subsequent
maps.   Properties:   not more
than one hemisphere shown at a
time; no angular distortions.
---
AITOFF:  this  projection will
be  used for  subsequent maps.
Properties:  whole  sphere can
be displayed at once,  no area
distortions.
---
CONST.NAMES: displays the list
of constellation abbreviations
together  with their Latin and
English names.
---
STAR NAMES:  displays the list
of  stars   which  were  given
individual names.
---
