The INFORMATION LABELS: section specifies the words that make up a human-readable representation of an information label, as well as the required combinations and combination constraints on these words. This section is used by the system to convert a human-readable representation of non-classification information label words into the internal bit-string form, and to translate the internal form to a human-readable representation.
The WORDS: subsection, which must appear immediately after INFORMATION LABELS:, specifies each word as well as the prefixes and suffixes needed by some words. The REQUIRED COMBINATIONS: and COMBINATION CONSTRAINTS: subsections follow the WORDS: subsection, in that order.