%N uvopen %F $MIR/src/subs/uvio.c
%D Open a uv data file.
%P rjs
%: uv-i/o
%B
FORTRAN call sequence:
        subroutine uvopen(tno,name,status)
        integer tno
        character name*(*),status*(*)

  Create and/or ready a UV data base to be accessed.

  Input:
    name        Name of the directory tree containg the u-v data.
    status      Either "old", "new" or "append". Old files can be read,
                whereas new and append files can only be written. Append
                files must be pre-existing uv data-sets.
  Output:
    tno         Handle of the uv data set.                              
