A) <marquee>
Marquee is a tag used to create scrolling text .
It supports attributes like , direction , height, width, bgcolor , loop etc common attributes.
Eg.
<Marquee direction="down" height="200"> my marquee text</marquee>
my marquee text
B) <pre>
This tag is used to preformat the text and text inside this tag is displayed in monospace format .
Eg.
<Pre>my text</pre>
My text
C) <sub>
This tag is subscript tag used to display text in subscript format it is useful to display chemical equations and mathematics formulas .
Eg .
H<sub>2</sub>SO<SUB>4</SUB>
H2SO4