1. A method of determining a matching level of a plurality of source texts stored in a translation memory to a lookup segment to be translated, the method comprising the steps of: determining any exact matches for the lookup segment in the plurality of source texts; and determining, in the case that at least one exact match is determined, that a respective exact match is an in-context exact (ICE) match for the lookup segment in the case that a context of the lookup segment matches that of the respective exact match.