Doc (an abbreviation of document) is a file extension for word processing documents; it is associated mainly with Microsoft and their Microsoft Word application. Historically, it was used for documentation in plain-text format, particularly of programs or computer hardware, on a wide range of operating systems. Almost everyone would have used the doc file format, whenever you write a letter, do some work or generally write on your PC you will use the doc file format. It was in the 1990s that Microsoft chose the doc extension for their proprietary Microsoft Word processing formats. As PC technology has grown the original uses for the extension have become less important and have largely disappeared from the PC world.
Early versions of the doc file format contained mostly formatted text, however development of the format has allowed doc files to contain a wide variety of embedded objects such as charts and tables from other applications as well as media such as videos, images, sounds and diagrams. doc files can also contain mail merge information, which allows a word-processed template to be used in conjunction with a spreadsheet or database.
AbiWord Apple Pages AppleWorks KWord Microsoft Word StarOffice
HTML4 has been superceded by HTML5, however still plays an important role in the history of HTML. HTML4 was the first version to include cascading style sheets (css), and these were changed further in HTML5 which included more presentational elements - HTML4 led the way here.
HTML 4.01 was published in late 1999 as a W3C Recommendation. It offers three variations: Strict, in which deprecated elements are forbidden, Transitional, in which deprecated elements are allowed and Frameset, in which mostly only frame related elements are allowed. XHTML is a separate language that began as a reformulation of HTML 4.01 using XML 1.0. It is no longer being developed as a separate standard. Most presentational markup elements were deprecated under the HTML 4.0 specification in favor of using CSS for styling.
Any Web Browser (e.g. Internet Explorer, Safari, Firefox, Google Chrome)