code: function init$16() {
          //no-op
          if (!this.sphere) {
              this.k0 = msfnz(this.e, Math.sin(this.lat_ts), Math.cos(this.lat_ts));
          }
      }
docs: /*
  reference:
  "Cartographic Projection Procedures for the UNIX Environment-
  A User's Manual" by Gerald I. Evenden,
  USGS Open File Report 90-284and Release 4 Interim Reports (2003)