This is the Spring 1988 DECUS VAX SIG Tape submission from Alan L. Zirkle Naval Surface Warfare Center Dahlgren, Virginia 22448 (703) 663-8023 The submission is NSWC RUNOFF, which is based on, and derived from, Bonner Lab Runoff (VAX version) from the VAX86C VAX SIG Tape. Extensive changes have been made to the utility; these changes are summarized in the file CHANGES.NSWC. The source is included; all lines changed have been marked (except for VAXIO.MAR, which was completely redone). The file VMSBUILD.COM is used to rebuild from sources. Two new modules written in Fortran were added. Object files for these have been included for sites not having the compiler. The utility is invoked with the verb RNO. There is a RNO.CLD which needs to be activated first. The executable is RNO.EXE. There is a RNO.HLP. We are in the process of writing the user documentation for RNO. Some of what we have done so far is included as the files whose names begin with ZZZ. In particular, ZZZNEW.RNO summarizes the differences between NSWC Runoff and Bonner Lab Runoff.