A single term can include more than one truncation symbol. ALSO, note that all terms are automatically searched in both plural and singular forms. A term entered as plural or as singular will result in the same number of hits. There is currently no way of turning this feature off. Northern Light is not case sensitive.
All search terms look for a match regardless of upper and lower case are searched.
However, using mixed case in a search term will cause hits that make an exact case match to rank higher. Compare the results of searching NeXT as compared to just next for an example. This only works for mixed case, not a search term entered in all uppercase. A full Boolean expression can be used after the colon even with spaces. In Special Collection documents, this searches the publication title.