Can't figure out how to do a search within a thread.
ETA; Found it. After clicking on Search button in top right corner a drop down list includes "Search Thread" as an option if a thread is already open. The initial choice says "Everywhere".
ETA; Found it. After clicking on Search button in top right corner a drop down list includes "Search Thread" as an option if a thread is already open. The initial choice says "Everywhere".