Posted on 2003-03-13
Medium Priority
Last Modified: 2011-09-20
In IE, about:blank displays a blank page but if u type in about:INDIA it will display INDIA in the browser. How does this happen? Can someone explain the funda behind it?

Question by:ajaycv
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions

Author Comment

ID: 8133871

Expert Comment

ID: 8134207
trye typing anything after about:
you can even try testing html tags with it:
about:<body bgcolor='steelblue' text='#FFFFFF'><h1>Hello World</h1><marquee>Blah blah</marquee

try also typing about:home
it will take you to your homepage

Expert Comment

ID: 8135164
If you are using Netscape, you can enter the following URLs
about: Shows the Browser Information
about:cache Shows the Cache Information (If a message box saying "Netscape is unable to locate the server (no name specified).", try copying the URL into the address bar and press Enter.)
about:mozilla It displays a special page (The Book of Mozilla, 12:10). (Tested in 4.79;4.8.)
about:blank A blank page

If you are using Internet Explorer, you can click the following links
about:home Go to Home
about:mozilla (Try this if you are using IE 4.0~6.0, a dark blue screen will be displayed)
about:blank A blank page
about: value it displays value

got this info from a website
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!


Accepted Solution

cirtap earned 60 total points
ID: 8141032
it appears that "about:" is just an internal "protocol" invented by Netscape to wrap certain (local) files to the browser window w/o using/knowing the file path.

Mozilla introcudes the "chrome:/file/path" and "ressource:/file/path" protocols, both leading into files inside the Mozilla directory or the JAR files.

These "special" protocols are commonly used, e.g. Opera has its own about:history.

MSIE also knows the "mk:" protocol to access CHM Helpfiles or "res:/file/path" to load a ressource from a .dll - like some of the error pages you may encounter, the "About dialog", "Find in page" ... all HTML files inside a .dll

More "abouts" in MSIE:

For MSIE you can change (and add) additional "about pages" - or make about:mozilla load the real one from Netscape :-)
This is done with - tada: a registry-key.
HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\AboutURLs

How 'bout creating "about:rtfm" pointing to a list of (html-)manuals ;-)

Happy abouting


Expert Comment

ID: 8141063
sort of useful:
go to the above registry key, add a new String, name it "bookmarks" and give it a value of
file://X:/path/to/Applicaiton Data/Mozilla/Profiles/default\xxxxxxx.slt/bookmarks.html

pointing to the bookmarks file of mozilla/Netscape and you're always in synch.
(re)load MSIE, type about:bookmarks, done.


Expert Comment

ID: 8154227
Hmmm  Do not see the about:ANYTHING behavior in IE 6.0.2800.

Helpful information:(http://pivx.com/larholm/unpatched/pivxie6sp1notes.html)
The about: protocol, sometimes used by programmers as an intermediate document creation storage, no longer works - at all. This has the effect of stopping a number of vulnerability components from working, since many of these vulnerabilities rely on the fact that about: was accessible from any protocol.
This is likely to break some functionality, but is largely irrelevant since about: should not be used as a proxy in production code anyhow. Yet another "security over functionality" step by Microsoft.

Additional information about security hole (Cross-Frame Security Zone Spoofing in Internet Explorer Using the 'About' Protocol):
LVL 53

Expert Comment

ID: 8820542
This question has been classified abandoned. I will make a recommendation to the
moderators on its resolution in a week or two. I appreciate any comments
that would help me to make a recommendation.

Unless it is clear to me that the question has been answered I will recommend delete.  It is possible that a Grade less than A will be given if no expert makes a case for an A grade. It is assumed that any participant not responding to this request is no longer interested in its final disposition.

If the user does not know how to close the question, the options are here:



Expert Comment

ID: 12751540
I am running MSIE 6, and I can not get rid of the about:blank, it will not let me change my homepage, on a permanent basis.
How do I get rid of it?

Featured Post

7 Extremely Useful Linux Commands for Beginners

Just getting started with Linux? Here's a quick start guide that has 7 commands that we believe will come in handy.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Not sure what the best email signature size is? Are you worried about email signature image size? Follow this best practice guide.
This article explains how to prepare an HTML email signature template file containing dynamic placeholders for users' Azure AD data. Furthermore, it explains how to use this file to remotely set up a department-wide email signature policy in Office …
In this tutorial viewers will learn how to style a corner ribbon overlay for an image using CSS Create a new class by typing ".Ribbon":  Define the class' "display:" as "inline-block": Define its "position:" as "relative": Define its "overflow:" as …
The viewer will receive an overview of the basics of CSS showing inline styles. In the head tags set up your style tags: (CODE) Reference the nav tag and set your properties.: (CODE) Set the reference for the UL element and styles for it to ensu…

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question