alcview.icn: Program to display allocation events in various ways

This program maps allocation events into colors and provides various
abstract visualizations of them.

Several visualizations are available:

     beacon          blinking light
     curves          random closed curves
     haystack*       randomly oriented lines
     nova*           radiating lines
     pinwheel        revolving sequence of sectors in a circle
     polygons        random polygons
     splatter*       randomly placed dots
     strip           scrolling strip of vertical lines
     symplat         as splatter, but in symmetric pattern
     vortex*         expanding/contracting square vortex
     web*            random walk

The visualizations marked with asterisks use the size information. The
others do not.

In terms of the monitoring framework terminology, this program
provides abstract visualizations for in an event space consisting
of category/size pairs -- 2CS -- in which the categories are colors.

The interface controls provide for:

     control of the display speed
     pausing the display
     resetting the display
     setting the period between automatic resetting
     changing the view