Building a General Purpose Interpreter, Math Engine and Parser in C#

{
    removeall:
	/*
		This example demonstrates the use of new plotting routines
		Created by K.I. (kashif@mathiversity.com)
	*/
	t = vectorin(-16, 0.005, 16);:	
	a = sin(8*t/5) * cos(t);:
	b = sin(8*t/5) * sin(t);:
	
	theta= vectorin(0, 0.005, 2*pi);:
	c = 4 * cos(theta) ^ 3;:
	d = 4 * sin(theta) ^ 3;:
	
	x= vectorin(-2*pi, 0.005, 2*pi);:
	y= sin(x);:
	
	p = createplot();:	
	
	addplot(p, a, b, 0, 1, red);:
	addplot(p, c, d, 0, 1, green);:
	addplot(p, x, y, 0, 1, orange);:
	
	"Let's show the plot by scaling 30 times";:
	showplot(p, 30, 30);:
	
	"Now further zoom in";:
	showplot(p, 100, 100);:	
	
	"Copy plot for changes.";:
	p2 = copyplot(p);:
	"Add a rotated version of second plot and draw it thick";:
	addplot(p2, c, d, 45, 2, red);:		
	"Draw new plot at 60 times original size";:
	showplot(p2, 60, 60);:
	
	"Remove the red curve";:
	removeplot(p2, 0);:	
	"Now add a 45 degrees rotated version of the removed curve to second plot and show it thick with a violet pen.";:
	addplot(p2, a*4, b*4, 45, 2, violet);:
	showplot(p2, 40, 40);:
}