lib/berkeley_library/tind/mapping/tind_field_from_multiple_map.rb
# one control field may have multiple rules
one control field may have multiple rules
one control field may have multiple rules
def rules_on_controldatafield
          tag = @from_controlfield.tag
          sym = Util.tag_symbol(tag)
          rules[sym]
        end
def rules_on_controldatafield tag = @from_controlfield . tag sym = Util . tag_symbol ( tag ) rules [ sym ] end
one control field may have multiple rules
one control field may have multiple rules