中藥是指“已編譯的Windows HTML幫助文件”。這是一個幫助和交付使用超文本標記語言(HTML)網頁內容一組技術。 HTML幫助是專為作者或者開發誰創造的軟件程序,多媒體標題,內聯網,外聯網,或互聯網內容。 HTML幫助中的規定,使用戶能夠輕松地查找和排序信息的導航控制。

CHM means "Compiled Windows HTML Help files". It is a set of technologies for delivering help and Web contents using Hypertext Markup Language (HTML). HTML Help is designed for authors or developers who create contents for software programs, multimedia titles, intranets, extranets, or for the Internet. HTML Help provides navigational controls that enable users to easily find and sort information.
CHM is a replacer of winhelp file system, and also it is a very popular E-BOOK file format on the internet. CHM is so little and with powerful search function that more and more people begin to recognize it and use it.