File Manager represents help files as file icons with a question mark. In Figure 2-2, there are two source files (.ctg and.htg extensions) and one run-time file (.sdl extension). If you double-click a markup file, your standard editor opens the file for editing. Double-clicking a .sdl file displays the run-time file using the Help Viewer.
To create a run-time help volume, first select the .htg or .ctg file icon in File Manager. Then, choose Compile from the File Manager Selected menu.
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