what is a "marquee"??

[viperRap02]

i have no idea wut the "marquee" button is for please tell me

[Stroke.nz]

The <marquee> tag is used to introduce text that scrolls horizontally within a display box. The usual warnings about the distracting and annoying nature of continuously running animations apply.

http://www.scit.wlv.ac.uk/encyc/marquee.html