# bistromathic - all the bells and whistles This example demonstrates best practices when using Bison. - Its hand-written scanner tracks locations. - Its interface is pure. - Its interface is "incremental", well suited for interaction: it uses the push-parser API to feed the parser with the incoming tokens. - It features an interactive command line with completion based on the parser state, based on `yyexpected_tokens`. - It uses Bison's standard catalogue for internationalization of generated messages. - It uses a custom syntax error with location, lookahead correction and token internationalization. - It supports debug traces with semantic values. - It uses named references instead of the traditional $1, $2, etc.