The grammar conjunc.grm
deals with coordinate and subordinate conjunctions. At present it
includes a few nodes that classify common words which are used as conjunctions.
It also recognizes a comma, or a conjunction optionally preceded by a comma,
as a syntactic type COMMA-COORD or COMMA-COORD which
can be used to separate words and phrases of the same syntactic type in
lists like "big, bold and brassy", "the first two, the next two, and the
last three", "fish, soup, or salad", and "a good number or just a few,
but not none".