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
Palm Markup Language is a specialist file used to create documents for an application called eReader which is the Palm eBook program. The creator of a PML file can then use another program which then converts the various files into a single PDB or PalmDOC file for use on a Palm Device.
PML files consist of tags used to give structure to the eBook. This allows the creator to define various features of an eBook including Chapters, Paragraphs, Indents, Titles and References. It also permits formatting tags such as Bold, Small Caps and Superscript. It also allows for images to be added to the eBook file.