Open the HTML Help project that includes the What's This? Help project you want to remove.
Click the Project tab.
Open the Context-Sensitive Help folder.
Open the Text-Only Topics folder.
Select CONTEXT.TXT (this is the What's This? Help file).
Click Delete
. The file is removed from your project.
Note: If you want to restore a What's This? Help file that you removed, you can recover it. The What's This? Help project file (.CHJ) remains in your project folder, and you can import it into your project to create a new CONTEXT.TXT file. For details, see Importing What's This? Help projects into HTML Help projects.