11. Both forms tried the formal grammar test C ( Appendix 3 ) at the beginning and 12. There is no place here for formal grammar . 13. Briggs devised or borrowed 54 tests of the abilities noted in these claims for formal grammar . 14. A "'uniquely inversible grammar "'is a formal grammar where no two distinct productions give the same result. 15. There appears to be no definitive classification of full SGML against a known class of formal grammar . 16. Formal language theory, the discipline that studies formal grammars and languages, is a branch of applied mathematics. 17. A language-based editor s features may be implemented by ad hoc code or by a formal grammar . 18. In computer science, "'SLR grammars "'are the class of formal grammars accepted by a Simple LR parser. 19. :In computer science a Formal grammar is a definition that allows recognition of a " language ". 20. The other types of formal grammar in the Chomsky hierarchy impose additional restrictions on what constitutes a production.