Hi Eileen,
As told by Peter and Rick, this feature is not part of
Robohelp 7. But the new version RoboHelp8, supports the scripting
functionality which allows user to write custom script to carry out
user specific work or feature.
I have created a custom script which does the same work. The
Script will scan through the project topic list and browse sequence
list and displays the topics which are not used in the browse
sequence.
I have uploaded the sample script file, just download the
script file and add to the scripting pod provided in RH8. Open the
project you want to see the unused Topics and run the script file,
this Script will show all the unused topics in the output pane in
RH8.
You can achieve many more things with scripting support in
RH8. You can download the RH8 trial version from adobe site.
Script
File
-Praful