The intent is to update and expand the grammar eventually so that certain words can act as special tags when they appear in Lojban conversation. For example, the grammar might specify a rule, which might be rather extensive and intricate, for governing the order of operations in mekso expressions and give this table of priorities/rules a single heading/name, such as "PEMDAS". Certain (metalinguistic) means may be employed in order to switch the rules of interpretation of Lojban utterances; when these means are utilized, a value/argument of some kind, possibly (probably?) some sort of named thing, will be supplied, such as something named "PEMDAS". However, the name supplied could refer to anything that the speaker and the audience agree to make acceptable for such reference. Thus, "PEMDAS" as spoken may refer to some set of rules other than the one labelled "PEMDAS" by the grammar; these rules may not even be well-defined or self-consistent; they may or may not refer to the interpretation of mekso expressions. Usually (probably), the speaker does intend to reference the rules so named by the grammar, but this is not necessarily the case (especially with abbreviations and shorter names). In order to remove the ambiguity of reference, the rule name uttered may be preceded by this word, which will force it to refer to the rule so named in a given grammar. With this word, there can be only one legal interpretation of the rule name- videlicet, the rules specified under that label in the grammar. If no such rule exists in the grammar, then all bets are off; if it does exist, though, then it must be the referent.
Specifying xorlo Lojban (or other styles) can be done in this way too.
(Note that the grammar can specify a variety of such rules, applying to various contexts, which may be mutually contradictory; the grammar itself will tend to remain neutral with regard to them and the default for conversation will either be likewise neutral or some cultural default. A conversation will follow the last specification for rules of interpretation, or the default, until a new rule for interpretation is specified.)
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