26. The method of claim 3 , wherein the indication of similarity comprises one or more indicators, the indicators comprising: an indication of like semantic pairs between the target document and the at least one additional document and an indication of the presence of original material in the target document, relative to the at least one additional document, for one or more of the identified named entities and/or the pair of named entities that appear together within the same constituent unit.
26. The method of claim 3 , wherein the indication of similarity comprises one or more indicators, the indicators comprising: an indication of like semantic pairs between the target document and the at least one additional document and an indication of the presence of original material in the target document, relative to the at least one additional document, for one or more of the identified named entities and/or the pair of named entities that appear together within the same constituent unit. 27. The method of claim 26 , wherein the indication of the presence of original material is displayed as an asterisk.