Open up a smartphone, tablet application, or a website these days, and you're likely to see an odd icon slung somewhere up in the top corner of the screen. Three horizontal lines stacked on top of ...

which is handy if you need a shape with arrows or a line that's not horizontal. Horizontal lines are commonly included in documents to help divide different sections and add some visual flair.

Open up a smartphone, tablet application, or a website these days, and you're likely to see an odd icon slung somewhere up in the top corner of the screen. Three horizontal lines stacked on top of ...