Bold

<B></B>

Italic

<I></I>

Underline

<U></U>

(not widely implemented)

Strikeout

<STRIKE></STRIKE>

(not widely implemented)

Strikeout

<S></S>

(not widely implemented)

Subscript

<SUB></SUB>

Superscript

<SUP></SUP>

Typewriter

<TT></TT>

(displays in a monospaced font)

Preformatted

<PRE></PRE>

(display text spacing as-is)

Width

<PRE WIDTH=?></PRE>

(in characters)

Center

<CENTER></CENTER>

(for both text and images)

Blinking

<BLINK></BLINK>

(the most derided tag ever)

Font Size

<FONT SIZE=?></FONT>

(ranges from 1-7)

Change Font Size

<FONT SIZE="+|-?"></FONT>

Font Color

<FONT COLOR="#$$$$$$"></FONT>

Select Font

<FONT FACE="***"></FONT>

Point size

<FONT POINT-SIZE=?></FONT>

Weight

<FONT WEIGHT=?></FONT>

Base Font Size

<BASEFONT SIZE=?>

(from 1-7; default is 3)

Marquee

<MARQUEE></MARQUEE>