In fact, there are various tools in the marketplace from primitive applications to complex and expensive systems for writing technical documentation that support HTML Help as an output format. Everybody of us is probably familiar with the HTML Help viewer, which has the Table of Contents, alphabetical Index, and the Search feature, located on the navigation pane to the left side from the help topic text. Thus, any Windows user will be able to open such a file under Windows 98, ME, 2000, XP, and the latest Vista operating system as well.Īn HTML Help CHM file includes all the features to provide the end-user with easily navigated tutorial. Thus, a CHM file is practically a kind of the portable formats for technical documentation, which can be opened on all Windows PCs since Windows 98. An HTML Help system is completely stand-alone and can be distributed as a single file (for example, 'My_Help_File.CHM'). CHM help files into a single help system with a common TOC.Nowadays, HTML Help CHM is the standard help format used in most modern Windows applications. However, it should be pointed out that the TOC, Index, and Search tools are not fully Unicode in HTML Help, so they depend on the language and character set settings. Full Unicode support for the content of help topics.CHM file can include hyperlinks, images, tables, videos, forms, collapsible parts of text, and any other objects including the objects implemented with a JaveScript library such as jQuery UI. Based on the Internet Explorer control, HTML Help provides full support for the HTML/CSS features.Built-in search engine that provides full-text search capability through the entire help file.The Index tool that allows the user to quickly find a specific term in a sorted list of keywords and also the topics associated with that term.A tree-type Table of Contents to organize the help file structure by using headings, sub-headings, topics, and also links to external URLs.The key features supported by HTML Help include:

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