They are short for "Excel Spreadsheet."
XLS, in terms of abbreviations, means Excel Spreadsheet.
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
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.
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.
It is a batch command file.
It is a batch command file.
A file name is what a file is called. A file extension defines what type of file it is. (Text file, HTML file, executable, etc.)
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.
8 characters a decimal the 3 letters for extension. 8.3
The main project file has a VBPROJ extension. This is also a file with the same name as the main project file, but with an SLN extension. The SLN extension is a solution file.
. (Dot)
File extension.
For most typical Word documents the extension is .docFor Excel workbooks (spreadsheets) the extension is .xlsIn general the file extension is the 3 letter/number "code" after the period in the complete file name that gives a hint as to what type of file it is. For example, in the file name resume.docthe word resume is the file's actual name and the .doc tells you that it is a document file.