An island grammar is a grammar that only describes a small chunk of the underlying language. It is used in language parsing in situations where there is no requirement for checking the entire syntax of a provided text. Island grammars can be extended with the use of a bridge grammar.
Island grammar is used when syntax checking is not required for a tex.t
( z1 use :ARG1 ( z2 grammar :mod ( z3 island ) ) :time ( z4 require :polarity - :ARG1 ( z5 check :ARG1 ( z6 syntax ) :purpose ( z7 tex ) ) ) )