MODCHQ - SET UP AND MAINTENANCE Ó UNCTAD – SITE (V1.15) 10.26 Fig. 10.20  MODCHQ : Functions: Database Management: Simplified Management: Customs Tariff Defining the Tariff Range To update by inserting or altering common data within a block of commodity codes, first specify the commodity code range. The syntax of the ‘Tariff ranges’  editing box is simply explained as follows: The tariff code must be enclosed in square brackets and   the  Commodity  Code  coverage  is  from two digit level to eleven digits. Tariff  ranges  can  be  used  but  the  syntax  requires  that  the  ranges  be  defined  in  pairs,  using  a comma as a separator: Multiple selections can be made, either of ranges or by combining single selections. Example: [8701] - Specifies all commodity codes within heading 8701. For  example ,  at  Chapter  level,  like  [87],  or  –  specific  as  the  lowest  level national subdivision, such as [87011010000]. Examples: a) [01, 05]  - selects all commodity codes in chapters 1 to 5. b) [ 5501,  550110]  - selects all commodity codes on from heading 5501 up to and including subheading 550110.