%N tabsetr %F $MIR/src/subs/tabio.c
%D Set active row in a table to work on
%: image-i/o
%B
FORTRAN call sequence:
        subroutine tabsetr(tno,row)
        implicit none

This sets the current row number. It not used, the row number might be
0 and illegal.

  Input:
    tno         The handle of the table file.                           
    row         The active row (1=first). Use 0 to auto-increment       
                if you don't know the row number                        
