Google chrome about:#######? [closed]

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I have seen that typing about:somekeywords in browsers address bar gives some information. What is this ? Why ? Do we have something similar for the Firefox, IE also ?

Example : Try below in chrome's address bar

about:histograms

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It called "The about: URI Scheme".

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It's a way for a browser to present 'about' style information.

And yes, we have it in all browsers. In a Mozilla based browser, try about:mozilla.

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yes. try about:blank

see this for original mozilla about: commands and entry on wikipedia

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Those are browser pages used for several different functions. Yes, IE and Firefox both have them, as well.

Click here for some information about Chrome's about pages.

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Just like "http:...", "ftp:.." and so on, the "about:..." directive represent a so called "schema", a keyword that identifies some protocol. In this case, the about schema is the protocol chrome (like any other major browsers) uses to access misc informations.

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About uri scheme:

about: is an internal URI scheme (also known as a "URL scheme" or, erroneously, "protocol") in various web browsers to display certain built-in functions. It is not an officially registered scheme, and has no standard syntax.

I simply love about:robots