void linch(xfinch, yfinch, xtinch, ytinch, newcurve) LINES.C Level 3
 
float xfinch The starting x location in inches (or cm).
float yfinch The starting y location in inches (or cm).
float xtinch The ending x location in inches (or cm).
float ytinch The ending y location in inches (or cm).
int newcurve = 0 if this line is a continuation of a curve.
= 1 if this line begins a new curve.
= 2 if this line ends a curve.
= 3 if this is an isolated line segment.
 
linch() draws a line between two points whose coordinates are specified in inches (or cm) with respect to the lower 
left corner of the upright drawing page.