bison: bison 3.0 (Bison parser generator)  
bison:  
bison: Bison is a general-purpose parser generator that converts an annotated 
bison: context-free grammar into a deterministic LR or generalized LR (GLR) 
bison: parser employing LALR(1) parser tables. As an experimental feature, 
bison: Bison can also generate IELR(1) or canonical LR(1) parser tables. Once 
bison: you are proficient with Bison, you can use it to develop a wide range 
bison: of language parsers, from those used in simple desk calculators to 
bison: complex programming languages. Bison is upward compatible with Yacc.  
bison: 
bison:

