Coding within each policy section follows an alphabetical sequence which is read from left to right, like a library card catalog, with subheadings for major policy areas within each section.
In some cases there are double-coded policies; a double-coded applies to more than one policy section. The newly adopted version applies to each of the separate codes listed in the policy code. For example, when policy GBK/KGC is adopted in section G, it then applies to two sections: section G as policy code GBK/KGC, and section KL as policy code KGC/GBK.
