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+.help nut Jun99 "Slalib Package"
+.nf
+
+      SUBROUTINE slNUT (DATE, RMATN)
+
+     - - - -
+      N U T
+     - - - -
+
+  Form the matrix of nutation for a given date - IAU 1980 theory
+  (double precision)
+
+  References:
+     Final report of the IAU Working Group on Nutation,
+      chairman P.K.Seidelmann, 1980.
+     Kaplan,G.H., 1981, USNO circular no. 163, pA3-6.
+
+  Given:
+     DATE   dp         TDB (loosely ET) as Modified Julian Date
+                                           (=JD-2400000.5)
+  Returned:
+     RMATN  dp(3,3)    nutation matrix
+
+  The matrix is in the sense   V(true)  =  RMATN * V(mean)
+
+  Called:   slNUTC, slDEUL
+
+  P.T.Wallace   Starlink   1 January 1993
+
+  Copyright (C) 1995 Rutherford Appleton Laboratory
+  Copyright (C) 1995 Association of Universities for Research in Astronomy Inc.
+
+.fi
+.endhelp