/**
 * Loop to grid.
 *
 * <p>Elie Zananiri<br>
 * CART 253, Winter 2008</p>
 */
 
size(300, 300); 
background(255); 
stroke(0);

// draw the vertical lines
int x = 0;
while(x < width) {
  line(x, 0, x, height);
  x = x+20;
}

// draw the horizontal lines
int y = 0;
while(y < height) {
  line(0, y, width, y);
  y = y+20;
}