Empty header files or no context-sensitive help
If you have added TopicAlias markers to your documents and generated output, but you get nothing in either the CHM header file or the Topics Report, you should check to ensure the TopicAlias marker has been added to the project and has been defined with the correct behavior.
In the Style Designer, see the Marker Styles tab. If no "TopicAlias" marker is present in the list, click "New Style" and add it. Then assign the "Topic alias" behavior.
By default, scanning a document with TopicAlias markers will automatically add it to the Style Designer and assign the correct behavior. If you're still having trouble, check the name of your TopicAlias marker type in the document for misspellings.