Creating Embedded Help Windows
An embedded window is a custom window that you can create and use to display topics instead of, or in addition to, the Help Viewer, a secondary window, or a custom frameset.
Depending on your design, using an embedded window to display topics requires more interaction between help authors and software developers than the other window types. Typically, a help author creates the design and topics for an embedded window and the help developer uses the HTML Help API to hook it up.
Note
To see an example of an embedded help window, open the HTML Help Image Editor, click the Help menu, and then click Help Topics.