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File extension tells you more about the file type. Example a .pdf indicates that the file is a 'Print Document Format' file which can be opend using Adobe Acrobat or Adobe Reader. Look at the sites below for a list of file extensions:

http://www.extensionpedia.com/html/list.html

http://www.fileinfo.net/

http://www.filext.com/


The usual term used is "file extension" or sometimes simply "extension". Not all operating systems use extensions, and of those which do, not all of them are limited to precisely three letters.
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13y ago
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15y ago

basically a file extension is that tells the computer what program to open it and what process the program should take for an immediate command

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Q: A file extension is the three letters at the end of PC file names that tell you?
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What does a file extension tell you?

The file extension tells about the type of file, with the extension three letters. For Eg:- *.txt -- text file *.exe-- executable file


How many letters are in a file extension?

minimum three and maximum four


What are the three letters following a file name?

The extension. It tells Windows what kind of a file it is. For example, a file with the ".doc" extension is a Microsoft Word Document.


What do the three letters after a period in a file mean?

its an extension for the file name which tells about the file type. but I just have a query, why most of the extensions are three lettered


What is a file extension How many letters does it have?

File extensions tell the computer what kind of program was used to create it, and are usually three letters. Common file extensions are .txt .doc .wps


Why exactly three letters in a file extension?

An old convention stemming from MS-DOS ca. 1983, which only allowed 8+3 characters in file names - 8 in the name and 3 for the extension. Since MS-DOS used the file extension to look up which program could open it, and there were many programs, developers would commonly use all three characters in their extensions.Neither Unix/Linux nor Mac had these requirements, but the convention is still with us.


What does the acronym XLS stand for?

XLS is the shorthand for Microsoft Excel file extension. A file extension is the group of letters following a period in a file name, denoting what kind of file it is.


File names almost always contain what at the end of the file name?

Extension


What is a file that is the last 3 characters that follow the file name that identify the type of program used to create the file?

The file extension. It comes after the file nice, after the last dot in the name. For example someTextDocumet.txt has the extension TXT for plain text. The program that created it is most likely the default one for opening it.


Txt extension refers usually to whatkind of file?

A text file, usually with numbers, letters, and/or simple graphics.


What is the three letter extension for a Microsoft Word life?

A Microsoft Word file has a .doc extension.


What is the file extension .pun software?

What is the file extension What is the file extension