Lotus settled another copyright infringement suit.

The lawsuit was filed in U.S. District Court in Boston last year against Management Information Source Inc., alleging that MIS’ manuals on Lotus’ 1-2-3 and Symphony software programs infringed upon the copyright of and plagiarized extensively Lotus’ user manuals for those packages. MIS agreed in the settlement to stop distributing its first edition of “The Manual:1-2-3” and to cease further production or sale of its first edition of “The Manual: Symphony.” MIS since has published a completely revised edition of “The Manual: Symphony.” It was the fourth such settlement for Lotus, based in Cambridge, Mass.