ShowTime 0.2                                                 03 Nov 1993


This is the second beta release of ShowTime, a Windows application that
displays various taxa in the North American Pollen Database in a time
series animation for the last 15,000 years. 

Requirements:

The requirements for running ShowTime are Windows 3.1 (TM), a mouse, and 
about a megabyte of diskspace. ShowTime comes with its own installation 
program that must be run from Windows, (e.g. by selecting File/Run from 
the Program Manager and typing "a:\setup").


The ShowTime Control Panel:

The ShowTime control panel contains buttons for selecting taxa; Stop, 
Play, Pause, and Frame Advance buttons for controlling playback; and 
Minimum %, Maximum %, Time Slice, and Speed spin controls for setting 
the various playback parameters.


The ShowTime Map:

For each time slice, ShowTime displays all sites in the database, the 
proximate glacial boundry, and a filled circle that represents the
pollen percentage for the selected taxon at that site. The data for 
ShowTime ranges principally over eastern North America. 


Running ShowTime:

To start an animation, select a single taxon for display and then click 
the Play button. Alternatively, you may click the Frame Advance button 
to start. In this case the animation sets the stage at 15,000 years and 
pauses. Now you can continue to click the Frame Advance button to advance 
to the next time slice, or you can click Play to have ShowTime advance 
continuous at the selected Speed. Clicking the Pause button temporarily 
halts the animation at the next time slice. You can resume playing the 
animation by clicking the Play or Frame Advance buttons. Click the Stop 
button at any time to stop the animation completely. 


Settings:

ShowTime represents the pollen percentage for a given taxon at a given
site by the diameter of the circle it displays. Minimum % sets the minimum 
percentage required for display. Maximum % effectively sets the limit
where ShowTime draws its largest circle. By adjusting Maximum % you 
control the diameter used to represent percentages between the minimum and
maximum. Time Slice is the number of radiocarbon years per frame and can
be set from 50 to 1000. Speed is the relative playback speed, 1 being very
slow and 10, relatively fast. Only Speed can be adjusted after playback 
begins.


Uninstall:

See the file, uninstal.txt, in your ShowTime directory (default c:\showtime)
for a list of the files installed on your system by ShowTime.


Please report any comments or problems with the program to:

   John Keltner                  keltner@denr1.igis.uiuc.edu
   Illinois State Museum              (217) 524-0490 (phone)
   1920 South 10 1/2 Street           (217) 785-2857   (fax)
   Springfield, IL  62703
   USA

