By default, the caption for the Natural Search tab is "N&atural Search". You can modify the caption by changing the SearchCaption property.
1. Select the desired Help target from the Project Editor.
2. In the property pane, select the SearchCaption property and insert the desired text into the right cell.
3. Before building your Help target, make sure that the SearchEnabled property is set to True (HTML Help and Winhelp).
After building the Help target, the Natural Search tab displays your SearchCaption property text.