The grammar adj-descr-p.grm is to cover descriptive adjectives in general.  At present it is very incomplete because English has so many descriptive adjectives.  However it does include adjectives of size from the grammar adjfunction.grm as well as modifiers for making comparative and superlative forms of descriptive adjectives (e.g. "more similar", "most ") and for building conjunctive lists of descriptive adjectives (e.g. "very large, brighter and more beautiful") and interrogatives ("how wet").   Syntactic classes defined in this module include a phrase type ADJ-DESCR-GRADABLE for "gradable" adjectives [Quirk, 5.24, 7.4] like "large", "green", and "good", which can be modified by adverbs that indicate their strength: (e.g., "fairly large ", "rather large", "very large",) -- see grader.grm.   Among such gradable adjectives, some are what I would call "completable" in that they can be modified by "completely", "entirely", "totally", and the like.  Examples are "entirely green", "totally unscrupulous", "completely calm".  Other gradable adjectives are not normally completable in the same way (e.g., "large", "small", "fast", "slow"), but that distinction will be left to semantic feature computations rather than being treated as a syntactic matter.  Still other properties of adjectives, including rules for their ordering [Quirk, 7.45] have not been dealt with in this version of the grammar module.  Also, many adverbial modifiers of adjectives other than the ones in grader.grm are not yet included in the grammar.