Preferences

WorldClock and WorldClock Lite each have a preferences screen that allows you to
adjust various display options to suit your own needs.  To select an option, click on
the appropriate button, and then click the OK button.

• Display Size - Small or Large
    The small size displays 5 worldwide clocks below a map that measures 360 x 180
    pixels.  The large option (not available in WorldClock Lite) displays 7 worldwide
    clocks below a 600 x 300 map.  If the large option is chosen while you are using 
    a 640 x 400 display (some PowerBooks), the size is automatically adjusted to fit.  
    Size changes take effect the next time you open WorldClock.

• Latitude/Longitude Gridlines - Show or Hide
    "Show" is the default setting.  Latitude and longitude lines are superimposed on
    the map every 15°.

• Tropics, Circles, Equator - Show or Hide
    "Show" is the default setting, displaying Arctic and Antarctic Circles, the Tropics
    of Cancer and Capricorn, and the Equator.  Between the Arctic or Antarctic Circles
    and the poles, there are some days each year when the sun never sets or rises.  The
    sun never moves North of the Tropic of Cancer, nor South of the Tropic of
    Capricorn.  Between the Tropics, there is at least one day each year when the sun
    passes directly overhead.

• Terminator Twilight Zones - Show or Hide
   "Show" is the default setting.  At any time, more than half of the Earth's surface is
   illuminated by sunlight.  "Show" displays the bands of twilight that lie between the 
   daylight area of the Earth, and the region where it is fully dark.  For best effect, 
   your monitor should be set to "Thousands of Colors" or "Millions of Colors", if 
   your machine supports one of these settings.  At 256 colors, or at grayscale settings, 
   WorldClock displays only one twilight band.  "Hide" turns the twilight effect off, 
   and the entire dark half of the Earth is displayed with uniform dimming.

• Show Distances In - Miles or Km
   "Miles" is the default setting.  Each of the analog clocks on the "Clocks" screen 
   shows the distance from the "Home Location" to the location represented by that
   clock.  Click "Km" to change the display to kilometers.  "Miles" refer to statute
   miles of 5280 feet, not nautical miles.

• Time Format - AM/PM or 24-Hour
   "AM/PM" is the default setting.  WorldClock as shipped assumes that you are a 
   U.S. user, with the System Date and Time formats set the way they were when 
   your system software was installed - to U.S. format, with 12-hour time.  If these 
   are the settings you are using (you can verify by using the Date and Time Control 
   Panel), you can set WorldClock to display in 24-hour format by clicking the 24-
   Hour preference.   If you have something other than U.S. and 12-hour format set 
   with the Date and Time control panel, you are on your own, as this version of 
   WorldClock relies on having standard U.S. System 7 time settings.

• Background Processing - On or Off
   "On" is the default setting, enabling WorldClock to keep displaying the correct time
   and world situation even when you are using a different program.  Some users have
   reported that they like to keep WorldClock running on a second monitor, while they
   use other software on the main monitor.  WorldClock updates itself once at the 
   beginning of each minute, and you may notice a slight processing interruption 
   in the program you are using while this occurs.  If this is bothersome, and you
   want to leave WorldClock open, then you may wish to turn background processing
   off.  With background processing off, WorldClock will not update itself while you 
   are busy using other applications.  It will snap to back to life, however, quickly
   updating itself, whenever you click on it or do something else to make it the active 
   process.

• Time Difference Relative To - Home or UT
   "Home" is the default setting.  Each of the analog clocks on the "Clocks" screen
   displays the number of hours it is ahead or behind your "Home" location.  If you
   instead select "UT", each of the clocks will give the number of hours it is ahead
   or behind Universal Time (Greenwich Time).

• Default Display - Clocks, Sunrise Today, Sun Calendar, Moon Calendar, or Sundial
   Use the pop-up menu to select which screen you want to first appear each time you
   open WorldClock.