In order for window-level topics to function as context-sensitive Help in an application, authors need to create aliases. An alias is the relationship between a window-level Help topic and a topic ID in a map file.
Before you create aliases, you need to create window-level Help topics. You do not have to author the content, but the .HTM files need to be available in the project.
There are two ways to create aliases, depending on how you are working with the map files. You can create aliases with imported map files or you can create aliases and generate map files at the same time.