What does the Shading option do?
When ‘shading’ is on, you can alter the colour of the squares by clicking in the middle of them. Some people prefer to work this way, marking squares that they know are ‘inside’ the loop in one colour and squares they know are ‘outside’ the loop in another colour. You still need to draw the lines in to submit your solution, of course. Pushing the shading button will switch shading styles from ‘off’ (the default), to ‘small’ where just the number is shaded, to ‘large’, where more of the square is shaded. If you’re logged in, your shading style will be remembered for future puzzles.
