If you want to narrow down where in the metadata documents Mercury
searches in, use Fielded Searches. Pick a topic to search on from the Search
Topic pick list. Once picked,the 'text box' beside the pick list becomes active. Enter the text you
want to search in that 'text box'. For example, if one picks 'Title' from the pick list, and enter's the
term 'Water' in the text box. Then search is made on all the metadata where the Title contains the term 'Water'.