draw_box

protocol:

function

parameters:

int   x1
int   y1
int   x2
int   y2
int   colour

result:

none

description:

Draw a rectangle with top left hand corner at x1,y1, bottom right hand corner at x2,y2 using specified colour

example:

draw_box( x1,  y1,  x2,  y2,  colour )