You can remove text-only topics in Microsoft HTML Help projects when changes to dialog box controls and fields affect context-sensitive Help.
1)Select Project > Open > Pods > Output Setup. The Output Setup pod appears.
2)Open the Context-Sensitive Help and What's This? Help Files folders.
3)Double-click the topic file (.txt).
4)Select the topic to remove.
Version-control projects may have more options.
•If your developer provides updated map files, replace them before removing the topic.
•Removing text-only topics leaves the topic ID and map number in the map file. You can remove unused Map IDs if you no longer need them.