.docx, all Office 2007 have a "x" on the end.
.rar
.txt
The default file extension for notepad is .txt. However, you can designate notepad as the primary application for any extension.
When processing PHP scripts, web servers most frequently use the.php extension by default. This implies that a web server will recognize and run PHP code when it comes across a file with the.php extension.
You either do not have another word processor, or you set that as the default program to pen files of that type.
lnk files aren't opened by any program. They are processed by windows to open another program or file. They are shortcut files. They don't need a default program
No, I send office files from outlool 2010 to lotus notes user and they can not open files. It appears wint .dat extension
TXT files are plain text files. They are very basic documents with minimal formatting. They can be opened and edited with notepad, wordpad, or any other word processor application.
DOCX is the filename extension for Microsoft Office 2007 Word documents. DOCX files do not contain macros. The old DOC extension is being phased out by Microsoft.
.wps is a Microsoft Works Word Processing extension Works is a completely different product that Microsoft still produces (they now sell Microsoft office 2007 and Microsoft works 9. If you want to open a .wps file in office, simply right click the file then click open with. Select the program word from the list and it will open (not quite sure why office doesnt automatically open these files by default, pretty stupid if you asked me). WPS files can sometimes be opened with a special converter when you have later editions of Word. Use the suggested link to get more information on this.
By default the tile view files are displayed in the Windows Explorer
That depends on the version of Word you're using. The older applications' (Word 97-2003) default extension was .doc; the newer extension (Word 2007 and later) is .docx because Word now uses open source xml tags.If you are sharing files with someone using an older version of Word, use the .doc or .rtf (rich text format) file format. If you are sharing files with someone using different word processing software, save a copy of your document in .rtf format.