+ 2.0 3.0 3.2 4.0 1.0 2.0 3.0 4.0   1.0 2.0 3.0 4.0   1.0 2.0       1.0 2.1 3.0     0.9 1.2

<Hn> container CSS: in-line?* start tag required end tag required * HTML 4.0 specifies this as in-line, however, according to the HTML 4.0 definition of "in-line" it should be "block". Sandia Reference

This sets up a heading condition on the page. The size of the type is dictated by "n" and takes a value from 1 to 6. All sizes are relative to the specified (or default) basefont.

Heading size "1"

Heading Size "2"

Heading Size "3"

Heading Size "4"

Heading Size "5"

Heading Size "6"

align= deprecated + 2.0 3.0 3.2 4.0 1.0 2.0 3.0 4.0   1.0 2.1 3.0     0.9 1.2		causes the heading to be positioned between the margins based on the argument
	"left" default + 2.0 3.0 3.2 4.0 1.0 2.0 3.0 4.0   1.0 2.1 3.0     0.9 1.2	headings are rendered flush left (the default).
	"center" + 2.0 3.0 3.2 4.0 1.0 2.0 3.0 4.0   1.0 2.1 3.0     0.9 1.2	forces the heading to be centered. (HTML 3)
	"right" + 2.0 3.0 3.2 4.0 1.0 2.0 3.0 4.0   1.0 2.1 3.0     0.9 1.2	flush right
	"justify" + 2.0 3.0 3.2 4.0	Headings are justified where practical, otherwise this gives the same effect as the default align=left setting.
class= + 2.0 3.0 3.2 4.0 1.0 2.0 3.0 4.0   1.0 2.0 3.0 4.0
clear= + 2.0 3.0 3.2 4.0 1.0 2.1 3.0		"When there is already a figure or table in the margin, you sometimes want to position another figure below the figure in the margin rather than alongside it. The CLEAR attribute allows you to move down unconditionally:" (w3) Alternatively, you can decide to place the figure alongside the figure in the margin just so long as there is enough room. The minimum width needed is specified as "## en" where ##=the number of nutts or ### pixels where ### is the number of pixels.
	"left" + 2.0 3.0 3.2 4.0 1.0 2.1 3.0	"move down until left margin is clear" (w3)
	"right" + 2.0 3.0 3.2 4.0 1.0 2.1 3.0	"move down until right margin is clear" (w3)
	"all" + 2.0 3.0 3.2 4.0 1.0 2.1 3.0	"move down until both margins are clear" (w3)
	"## en" + 2.0 3.0 3.2 4.0	"move down until there is at least 40 en units free" (w3)
	"### pixels" + 2.0 3.0 3.2 4.0	"move down until there is at least 100 pixels free" (w3)
dingbat= + 2.0 3.0 3.2 4.0		places an icon in the heading. As yet, I have no value for icon.
dir= + 2.0 3.0 3.2 4.0
	"ltr"
	"rtl"
id= + 2.0 3.0 3.2 4.0 1.0 2.0 3.0 4.0   1.0 2.0 3.0 4.0
index= + 2.0 3.0 3.2 4.0
lang= + 2.0 3.0 3.2 4.0 1.0 2.0 3.0 4.0   1.0 2.0 3.0 4.0
md= + 2.0 3.0 3.2 4.0		"Specifies a message digest or cryptographic checksum for the associated graphic specified by the SRC attribute. It is used when you want to be sure that a linked object is indeed the same one that the author intended, and hasn't been modified in any way. For instance, MD="md5:jV2OfH+nnXHU8bnkPAad/mSQlTDZ", which specifies an MD5 checksum encoded as a base64 character string. The MD attribute is generally allowed for all elements which support URI based links." (w3)
nowrap + 2.0 3.0 3.2 4.0		do not wrap the header to the next line
seqnum=## + 2.0 3.0 3.2 4.0		initial sequence number for headers. I have no explanation of the value of "##".
skip=## + 2.0 3.0 3.2 4.0		increment the sequence number. Again I have no further explanation.
src= + 2.0 3.0 3.2 4.0		the source of the image to appear with the header. The only argument is "URL".
style= + 2.0 3.0 3.2 4.0 1.0 2.0 3.0 4.0
title= + 2.0 3.0 3.2 4.0