Navigator 2.0, Internet Explorer 3.0
An integer between 1 and 7 or a string that starts with a + or - sign followed by a digit between 1 and 7. If an integer is specified, it is an absolute font size specification. If a string beginning with + or - is specified, it is a font size specification that is relative to the <BASEFONT> font size.
A copy of string, contained within <FONT SIZE="size"> and </FONT> HTML tags.
The first two lines of the following code fragment have the same effect as the second two:
s1 = 'Chapter 1'.fontsize(6); s2 = 'SMALLCAPS'.fontsize('-1'); s1 = '<FONT SIZE="6">Chapter 1</FONT>' s2 = '<FONT SIZE="-1">SMALLCAPS</FONT>'