6.9.7 Bracketed Pairs/Lists

   Bracketed pairs/lists appear throughout the generated HUTN grammars. They consist of 0 or more (strictly 2 for a pair) values separated by white space or commas, surrounded by matching brackets. The brackets can be either square [], round (), or angle <>.

   As a number of the representations that use bracketed pairs/lists are recursively defined, it is to be expected that bracketed pairs/lists will be nested. The use of different kinds of brackets may help to make the groupings clearer in the text when there is extensive nesting.

   Bracketed form is also used for parametric form, but in this case the brackets are always round, and there is at least one value in the list (See 6.3, “Class Representations?).