The HTML "Marquee" tag
“Marquee” is a somewhat esoteric HTML tag introduced in Internet Explorer 3 that is used to create a scrolling area of text. It has a direction attribute that specifies the direction that the text should move in. The text can also be set to bounce around when it hits the end of its scroll area.
I created this example on JSFiddle to demonstrate.
The marquee tag is not valid according to any HTML specification. It is, however, supported in most browsers.