Omni Systems, Inc. Mif2Go User's Guide, Version 55
> 7 Producing on-line Help > 7.1 Weighing Help-system alternatives > 7.1.4 Evaluating Microsoft HTML Help
HTML Help from Microsoft does a thorough job, even though it is slow and has numerous defects.
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files can be used only on Windows systems, not on Macintosh or UNIX,
because the Java applet is poorly implemented. This is the main reason
other Help-authoring-tool vendors use their own proprietary Java applets
to provide a tri-pane window and search functionality, which you need
for cross-platform applications.
On Windows 2000, Microsoft itself gets around the last two problems by using WinHelp for Context Sensitive Help and pop-ups, HTML Help for the rest.