There are four kinds of Help windows.
| Window type | Description |
| Main window | Main Help application window, which contains the menu bar and button bar and that most Help files use to display topics. The main Help window can include a nonscrolling region. |
| Secondary window | Independent windows similar to the main Help window, except secondary windows lack a menu bar and button bar. Secondary windows can include a nonscrolling region. |
| Pop-up window | Temporary windows that appear in a fixed size and location over the main Help window or a secondary window. |
| Embedded window | Rectangular windows that appear in a fixed size and location within another Help window and use a dynamic-link library (DLL) to display information, such as a bitmap. |
Help files can display topics in the main window, one secondary window, and one pop-up window at the same time. Although you can display only one secondary window and one pop-up window at a time, you can use them throughout your Help file. Figure 9.1 shows a Help file that uses a main window, a secondary window, and a pop-up window.
Inside topics, Help also displays embedded windows, which are rectangular regions that display graphics, multimedia data, and other specialized information. Embedded windows are formatted with the topic text, and they move when the topic is scrolled or when the window is sized.
Figure 9.2 shows a topic in the main Help window that includes an animation displayed in an embedded window.
To display topics in windows, you use jumps. When you create a jump hot spot, you choose a topic to display and a window in which to display the topic. Jumps are discussed in Chapter 8, “Creating Links and Hot Spots.”