| Countries utilizing the Harmonized System are strictly not permitted to alter in any way the descriptions associated to a heading or a subheading nor can the numerical codes at the four or six digit level be altered. |
| Use function words when they are necessary to clarify a relationship between a subheading and its heading. |
| The tariff classification system is based on a complex hierarchy that comprises a four-digit heading, a six-digit subheading, and a tariff number with eight or more digits, depending on the country. |
| As the chapter's initial subheading states, both the hereditarians and the environmentalists are triumphant. |
| The short answer to the question posed in the subheading is that Canadian courts have been all over the map. |
| The next five resources in the Overview fall under the subheading of community interventions. |
