.help kbj Jun99 "Slalib Package"
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      SUBROUTINE slKBJ (JB, E, K, J)

     - - - -
      K B J
     - - - -

  Select epoch prefix 'B' or 'J'

  Given:
     JB     int     slDBJI prefix status:  0=none, 1='B', 2='J'
     E      dp      epoch - Besselian or Julian

  Returned:
     K      char    'B' or 'J'
     J      int     status:  0=OK

  If JB=0, B is assumed for E < 1984D0, otherwise J.

  P.T.Wallace   Starlink   31 July 1989

  Copyright (C) 1995 Rutherford Appleton Laboratory
  Copyright (C) 1995 Association of Universities for Research in Astronomy Inc.

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