This
is the largest size print using {h1}.
This is the largest size print using {font size=7}.
This is adding the {b}{/b} tags.
This is adding the {i}{/i} tags.
This is both bold and italic.
note also, that using the {h1}{/h1} skips to the next line.

Font sizes range from 1 to 7, with 7 being the largest.
{font size=1}{/font}
{font size=2}{/font}
{font size=3}{/font}
{font size=4}{/font}
{font size=5}{/font}
{font size=6}{/font}
{font size=7}{/font}

You can change fonts letter by letter if you wish that type of effect.

This:
{font size=1}Y{/font}
{font size=2}A{/font}
{font size=3}N{/font}
{font size=4}K{/font}
{font size=5}E{/font}
{font size=6}E{/font}
{font size=7}S{/font}
Will produce:

YANKEES

This:
{pre}
{font size=1}Y{/font}
{font size=2}A{/font}
{font size=3}N{/font}
{font size=4}K{/font}
{font size=5}E{/font}
{font size=6}E{/font}
{font size=7}S{/font}{/pre}
Will produce:

Y
A
N
K
E
E
S

Colors

Using the same number system as background and text colors, you can use color with the font tag.  The HTML for the title above is:
{center}{font size=7 color="#0000ff"}Colors{/font}{/center}

Adding color to the example in the previous section,
This:
{pre}
{font size=1 color="#0000ff"}Y{/font}
{font size=2 color="#ff99ff"}A{/font}
{font size=3 color="#000099"}N{/font}
{font size=4 color="#ff0099"}K{/font}
{font size=5 color="#990000"}E{/font}
{font size=6 color="#ff0000"}E{/font}
{font size=7 color="#666666"}S{/font}{/pre}
Will produce:

Y
A
N
K
E
E
S

Style
In a font tag, the element which changes the font style is face.
You probably have alot of font styles on your computer, and
though not all of them are recognised by all browers, you can
create some effects with these.  If a font style is not recognised
by a particular browser, the browser will go to the default fonts.
Examples:

{font size=7 face=arial}Is this.
{font size=7 face=calligrapher}Is this.
{font size=7 face=stagecoach}Is this.