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Fly Help is an authoring tool for Help document authors, technical writers, and developers to create online help. The program provides an easy way to create HTML Help, Web Help, manuals and ebooks in CHM format. Drag a folder containing HTML files and drop it onto Fly Help, then click "Compile to CHM". How simple it is! And more, it also provides powerful functions for editing HTML files, customizing Help, designing TOC and Index, and so on.