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+.help prenut Jun99 "Slalib Package"
+.nf
+
+      SUBROUTINE slPRNU (EPOCH, DATE, RMATPN)
+
+     - - - - - - -
+      P R N U
+     - - - - - - -
+
+  Form the matrix of precession and nutation (IAU1976/FK5)
+  (double precision)
+
+  Given:
+     EPOCH   dp         Julian Epoch for mean coordinates
+     DATE    dp         Modified Julian Date (JD-2400000.5)
+                        for true coordinates
+
+  Returned:
+     RMATPN  dp(3,3)    combined precession/nutation matrix
+
+  Called:  slPREC, slEPJ, slNUT, slDMXM
+
+  Notes:
+
+  1)  The epoch and date are TDB (loosely ET).
+
+  2)  The matrix is in the sense   V(true)  =  RMATPN * V(mean)
+
+  P.T.Wallace   Starlink   April 1987
+
+  Copyright (C) 1995 Rutherford Appleton Laboratory
+  Copyright (C) 1995 Association of Universities for Research in Astronomy Inc.
+
+.fi
+.endhelp