void circtxt (x, y, r, string, height, angle) FNTPLT.C Level 1
 
float x x coordinate of center of circle in inches (or cm).
float y y coordinate of center of circle in inches (or cm).
float r Radius of circle in inches (or cm).
char *string String to be plotted. The first character should be a font-selection character.
float height Height of characters in inches (or cm).
float angle Location of start of text (degrees).
 
circtxt() puts text on a circle of radius r centered at x, y (in inch units) starting at (r, angle). See the example 
DELAYS.C for an example of how to obtain the inch values in a polar plot.