Which is not a file extension used by microsoft office programs?

Q: Which of the following is not valid character in a file name?

Dont start or end your filename with a space, period, hyphen, or underline. Keep your filenames to a reasonable length and be sure they are under 31 characters. Most operating systems are case sensitive; always use lowercase. Avoid using spaces and underscores; use a hyphen instead.

In a computer, a file extension, also called a file format, is the layout of a file -- in terms of how the data within the file is organized. A particular file format is often indicated as part of a file's name by a file name extension (suffix). Conventionally, the extension is separated by a period from the name and contains three or four letters that identify the format.

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List of file types used by various applications from Microsoft Office productivity suite and Office 365 apps.
Which of the following is not valid character in a file name?
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Application programs must be able to recognize and possibly access data within the file. Sometimes a program may not care whether the file has the appropriate extension name because it can examine the bits in the file to see whether the format (layout) is one it recognizes. Other times, the end user must specify what program should be used to open and work with file.

There are as many different file formats as there are different programs to process the files. A few of the more common file formats are:

Word documents (.doc)
Web pages (.html)
Web page images (.gif and .jpg)
Adobe Acrobat files (.pdf)
Executable programs (.exe)

This was last updated in September 2005

Continue Reading About file extension (file format)

"Every File Format in the World" lists many of the thousands of existing file formats.

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List of file types used by various applications from Microsoft Office productivity suite and Office 365 apps.

This category of file extensions contains file types from the Microsoft Office productivity suite and its individual programs. The latest edition, Office 2016, is available for Windows and OS X in several editions that offer various combinations of productivity software and also as a subscription based platform - Office 365. The latest editions of Office offers the following programs:

Word (all editions)
Excel (all editions)
PowerPoint (all editions)
OneNote (all editions)
Outlook (Home and Business and higher)
Publisher (Professional and higher; Windows only)
Access (Professional and higher; Windows only)
Skype for Business (Professional Plus and higher; Windows only)
Additionally, there are two programs from the Office suite that are not part of any of the suites at this time, namely Visio and Project. These two can be only obtained as part of Office 365 subscription.

Over the years, users became familiar with most of the common Microsoft Office file extensions, with .doc, .xls, and .ppt files being probably the three most known. With the release of Office 2007, Microsoft was trying to leave those well-known extensions in the past and replace them with the new XML-based formats that have a 4-letter file extensions, with "x" being appended to the original extension, so for example .doc became .docx, .xls -> .xlsx, .ppt -> .pptx etc. The key difference is that the original files were saved in binary form and the new ones are XML-based. These new formats are still being used in the latest 2016 edition of Microsoft Office, but the older formats are still supported and can be opened in their respective programs.

Another change introduced in the 2007 Office release was that there are different extensions for files that have macros enabled and those that do not. Macro-enabled documents include a file name extension that ends with the letter "m" instead of an "x". For example a macro-enabled Word 2007 document has the .docm extension and thereby allows any user or software to recognize documents that allow additional code (macro).

The DOC file extension is used for Microsoft Word documents. Word is a popular word processing program, and is part of the Microsoft Office Suite of software. DOC files use a Binary Interchange File Format to store word processing data and are proprietary to Microsoft.

LEADTOOLS supports loading DOC (97-2003) files through the DOC filter.

Additional features supported by LEADTOOLS:

Loading files as a raster image or SVG (Scalable vector graphics) document.
Loading files with different DPI
Loading files with different page width and height
Loading Word documents with different rasterization options: Best Fit or Multi-page.
Supports for Right-to-Left rendering, paragraph borders, and table cell shading.

MS-Word (DOC) file format has been enhanced as follows:

Supports floating images
Support for tables, nested tables and Tables of Contents has been improved
DPI support has been improved

File constants associated with this file format are:

ConstantRead SupportWrite SupportDescriptionFILE_DOC1,8,16,24 BPPYes[342] Microsoft Office 97-2003 Word

Required DLLs and Libraries

LEADTOOLS supports writing/saving using LEADTOOLS Document Writers. For additional support details, refer to the following:

Which of the following is not valid character in a file name?

Don't start or end your filename with a space, period, hyphen, or underline. Keep your filenames to a reasonable length and be sure they are under 31 characters. Most operating systems are case sensitive; always use lowercase. Avoid using spaces and underscores; use a hyphen instead.