def draw_column_bitset(rec, col_or_sym, bitset)
      turn_on_flags = []
      value         = rec.send(get_column_name(col_or_sym))
      for flag in bitset.constants do
        turn_on_flags << flag if flag_on?(value, bitset, flag)
      end
      turn_on_flags.map{|f| rec.class.human_const_name(bitset, f) }.join(' ')
    end
def draw_column_bitset(rec, col_or_sym, bitset)
      turn_on_flags = []
      value         = rec.send(get_column_name(col_or_sym))
      for flag in bitset.constants do
        turn_on_flags << flag if flag_on?(value, bitset, flag)
      end
      turn_on_flags.map{|f| rec.class.human_const_name(bitset, f) }.join(' ')
    end
draw bitset column in list.

 === INPUTS
 rec::         AR object
 col_or_sym::  column object returned by rec.class.columns
 bitset::      Module which contains bitset constants

 === SEE ALSO
 get_bitset()::        get bitset definition
 draw_bitset()::       draw bitste checkboxes field
 draw_column_enum()::  draw bitset column in list