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Level 3 HTML Summary

HTML has now been defined to the 3.2 (Wilbur) specification. This document summarizes the features of this latest version of HTML.

HTML 3.2 describes additions over the Level 0, Level 1, and Level 2 elements. In this document, HTML elements listed are in all capital letters; the attributes are indicated by initial capital letters.

HTML structure and comment elements

Level 3.2 specifies one additions over Level 0, Level 1, or Level 2: the Version attribute of the HTML element. For example:

<HTML Version="-//IETF//DTD HTML 3.2//EN">

The HEAD and Related Elements

STYLE: This element provides a way for the author of a document to define rendering information which will work with style sheets.
SCRIPT:
Reserved for future use with scripting languages.
LINK:
Extensions to the Rel attribute; Rel can be used to define a series of values for browser toolbar or other buttons; Here are examples of values of this attribute:
- Rel = Home; defines the home page link relative to this document
- Rel = ToC; table of contents link
- Rel = Index; an index
- Rel = Glossary; the glossary of terms
- Rel = Copyright; the copyright statement
- Rel = Up; the parent document
- Rel = Next; the next document to visit in a "tour"
- Rel = Previous; the previous document in a "tour"
- Rel = Help; a link to a help document or service
- Rel = Bookmark; a link to a list of key links for the document
- Rel = StyleSheet; a stylesheet to control the rendering of the current document

The BODY and Related Elements

Extension to the BODY element: attributes are:
- Background: this attribute's value is the URL of the graphic that will be tiled as the background of the page. The user will not see this background for non-compliant browsers, if image loading is turned off, or if the user has overridden the background images in their preferences.
- BGColor: this attribute allows the user to specify a solid background color. The color is specified using a hexadecimal color code:
  #RRGGBB
  where RR, GG, BB are the hexadecimal digits specifying the Red, Green, and Blue values of the color. For example:
  black = #000000
  blue = #0000FF
  red = #FF0000
  orange red = #FF4500
  white = #FFFFFF
  The value of color attributes can also be specified by these color names: aqua, black, blue, fuchsia, gray, green, lime, maroon, navy, olive, purple, red, silver, teal, white, and yellow.
- Text: this attribute specifies the color of the document's text.
- Link: this attribute specifies the color of the document's hotspots.
- VLink: this attribute specifies the color of visited links.
- ALink: this attribute specifies the color of the active link (the color it appears while the user is selecting it).

BODY elements:

APPLET: to embed a Java applet into an HTML document.
DIV: used to define a paragraph of text; its one attribute is Align with values right or left.
This paragraph is aligned right.

This paragraph is aligned left.
MAP: allows you to define client-side image maps. The MAP element has one attribute, Name, which you set to the name which you use as the value of the Usemap attribute of the corresponding IMG element. The MAP elements contain AREA elements which relate areas on the image to URLs. AREA elements have the attributes:
- Shape which can be circle, rect, poly, or default
- Href which identifies the URL associated with the hotspot
- Coords which identifies the coordinates of the outline of the shape
  - <AREA Shape="rect" Coords="left,top,right,bottom" Href="URL" >
  - <AREA Shape="poly" Coords="x1,y1,x2,y2,...xn,yn" Href="URL" >
  - <AREA Shape="circle" Coords="x,y,radius" Href="URL" >
- Nohref which identifies that the hotspot has no resource associated with it.
FONT lets you change font size or color or both. You can cha nge t he font size in sizes from 1-7 or use + or - to ch ange relative to the current base size (default 3).
H1...H6: the Align attribute (with values left, right, or center) can be used to set the text alignment of a heading:
Heading 4 Align left

Heading 4 Align center

Heading 4 Align right
P: the Align attribute can be used to set the text alignment of a paragraph.
This is a right aligned paragraph. Note that you put the Align attribute in the paragraph start tag and you can omit the paragraph end tag if you want.

This is a left aligned paragraph. Note that you put the Align attribute in the paragraph start tag and you can omit the paragraph end tag if you want.

This is a centered paragraph. Note that you put the Align attribute in the paragraph start tag and you can omit the paragraph end tag if you want.

UL and OL: Type attribute added to set the bullet style. For UL, the Type could be disc|square|circle:

UL Type="disc":

item
item

UL Type="circle":

item
item

UL Type="square":

item
item

For OL, the Type is the numbering style.
Numbering style attribute values
Value Meaning Example

1 arabic numbers 1, 2, 3, ...

a lower alpha a, b, c, ...

A upper alpha A, B, C, ...

i lower roman i, ii, iii, ...

I upper roman I, II, III, ...

Numbering style attribute values
Value	Meaning	Example
1	arabic numbers	1, 2, 3, ...
a	lower alpha	a, b, c, ...
A	upper alpha	A, B, C, ...
i	lower roman	i, ii, iii, ...
I	upper roman	I, II, III, ...

For example:

Type="I"
1. Type="A"
  1. Type="1"
    1. Type="a"
      1. Type="i"
      2. Next "i" item
    2. Next "a" item
  2. Next "1" item
2. Next "A" item
Next "I" item

OL: Start Attribute added to initialize the sequence number. Value attribute can be used on LI elements to reset the value.
DIV: used to represent containers, or sections, of a document. For example, its attribute Align (with values left, right, or center) can be used to set the alignment of all the elements it contains.
CENTER: centers text
HR: attributes added:
- Size="number": how thin the line should be in pixels. Example 1, below is 15 pixels thick and runs the whole width of the display.
- Noshade: turns off shading to create a solid bar. Example 2, below is a 1 pixel solid bar which runs the whole width of the display.
- Width="number|percent": the width of the line, either expressed as width in pixels (number, as in Example 3 below which is 100 pixels wide) or a relative width as a percent of the current display width (not page width). Example 4 is 33% of the display width. These lines are by default centered (default can be overridden with the Align attribute).
- Align="left|right|center": the alignment of horizontal lines that are less than the full width of the page. Example 5 is a 5 pixel bar which is 10% of the display wide and aligned to the right.
HR Example 1. <HR Size="15">:
HR Example 2. <HR Noshade>:
HR Example 3. <HR Noshade Width="100" Size="5">:
HR Example 4. <HR Noshade Width="33%" Size="5">:
HR Example 5. <HR Width="10%" Align="right" Size="5" Noshade>:
A: anchors: more attributes:
- Md: specifies a message digest (cryptographic checksum) for document defined by Href.
- Shape: used within figures to define regions corresponding to a link to the document defined by Href.
information typing elements
- DFN: the defining instance of a term
- Q: a short quotation
- LANG: the (human) language currently defined
- AU: the name of an author
- PERSON: names of people
- ACRONYM: acronyms in the document
- INS: inserted text (e.g., when documents are amended)
- DEL: deleted text (e.g., when documents are amended)
font style elements
- U: underline text
- STRIKE: ~~strike-through text style~~
- BIG: big print relative to current font
- SMALL: smaller print relative to current font
- SUB: _{a subscript}
- SUP: ^{a superscript}
IMG attributes added:
- Width="value" Height="value"; width and height of the image in pixels; speeds up processing if given because Netscape can layout the page before images download. If inaccurate, Netscape will size the image to the given width and height.
- Align="top|middle|bottom|left|right"
- Border="value"; thickness of the border around images
- Vspace="value"; Hspace="value"; controls the blank space above and below (Vspace) and to the left and right (Hspace) of an image
- Usemap="name" the name of the client-side image map to use.

FIG: used to define figures with captions; example:

<FIG Src="http://www.december.com/html/images/world.gif">
   <P><CAPTION>Example Figure</CAPTION>
   <P><CREDIT>J. December</CREDIT>
</FIG>

Your browser renders this as:

Example Figure

J. December

TABLE: used to define tables.

Entities

References

Introducing HTML 3.2, from the W3C.
Table Summary in this web.

John December (john@december.com) / 14 Jul 1996

Level 3 HTML Summary

HTML structure and comment elements

The HEAD and Related Elements

The BODY and Related Elements

Heading 4 Align left

Heading 4 Align center

Heading 4 Align right

Entities

References