Modify a text file: $/practice_lines.txt
$/practice_lines.txt
// Practice points and lines // by Prof. BAM point(20,20); point(25,20); point(30,20); point(35,20); point(40,20); // Five dots line(10,30, 90,30); // Horizontal in X line(10,40, 10,70); // Vertical in Y line(20,50, 60,60); // Diagonal (downward). line(10,80, 70,40); // Diag (up) text("Points and lines", 10,10); text("by BAM", 0,90);