Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Databases
Mail Systems
openSolaris
Eclipse Documentation
Techotopia.com
Virtuatopia.com

How To Guides
Virtualization
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Windows
Problem Solutions

  




 

 

Logical Tags

Contents

<H# ...> Headers
<EM> Emphasis
<STRONG>
<INS> Inserted
<DEL> Deleted
<CITE> Citation
<ADDRESS>
<SAMP> Sample
<CODE>
<KBD> Keyboard
<VAR> Variable
<DFN> Definition
<H# ...> next page
What's so logical about logical tags?

The original intent of HTML was to mark up text to indicate the purpose of each part of the document. Text within the <H1 ...> is a header, text within <CODE> is code from a program.

Although logical tags (also called Idiomatic Elements) indicate different types of information, most of them are usually rendered in one of just a few ways: italics, bold, or monospace (all characters the same width):

This is emphasized text
This is cited text
This is strong text
This is sample text
This is code text
This is keyboard text

So if logical tags just look like bold or italics, why use them at all? Why not just use <B> when you want bold? Logical tags have lost favor to "formatting" tags, which indicate the physical appearance of the document (for example <B> for BOLD). This loss of popularity is unfortunate, because logical tags still serve some important purposes:

  1. Logical tags allow the browser to render that information in the manner most appropriate for that browser. Text that should be emphasized (<EM>) may be best emphasized in Windows with italics, and bold in Unix.

  2. Logical tags help you, the author, keep track of what you are saying, without the distraction of presentation. If you need to indicate someone's address, use <ADDRESS>, knowing it will be presented in an appropriate manner.


 
 
  Copyright 1997-2002 Idocs inc. Published under the terms of the Open Content License Design by Interspire