The Inverse Graphing Calculator (version beta-1) is like a backwards graphing calculator. Normally, you enter an equation into your calculator and then get a graph of the curve. The way the IGC works is, you type something you'd like as your curve, like 'Hello World' or 'I love you'. The IGC produces an *equation* which has this phrase as its graph!
((y-(1/2)x-2)^2+|x-2|+|x-4|-2)^2((y+(1/2)x-4)^2+|x-2|+|x-4|-2)^2(x-6)^2((y-4)^2+|x-5|+|x-7|-2)^2
((y-2)^2+|x-5|+|x-7|-2)^2(x-8)^2((y+(1/3)x-(20/3))^2+|x-8|+|x-(19/2)|-(3/2))^2((y-(1/3)x-(1/3))^2+|x-8|+|x-(19/2)|-(3/2))^2
((y+(1/4)x-5)^2+|x-8|+|x-10|-2)^2((y-(1/4)x)^2+|x-8|+|x-10|-2)^2(x-12)^2((y-4)^2+|x-11|+|x-13|-2)^2
((y-2)^2+|x-11|+|x-13|-2)^2((y-(1/2)x+5)^2+|x-14|+|x-16|-2)^2((y-3)^2+|x-14|+|x-16|-2)^2
((y-(1/2)x+4)^2+|x-14|+|x-16|-2)^2+(y^2-6y+8+sqrt(y^4-12y^3+52y^2-96y+64))^2=0