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 \c!terminalstart 
                 =\tttf 
\syst_helpers_process_comma_item #1,#2->\if ,#1
                                               ,\expandafter \syst_helpers_p...
 \c!terminalstart =\tttf , \c!terminalstop 
                                          =, \c!nonterminalstart =\mathematics 
\syst_helpers_get_parameters ...cess_comma_item #1
                                                  ,],\_e_o_p_ 
l.157    \c!indentnext=\v!no]
                           

147     \def\setupbnfgrammar%
148       {\dosingleargument\dosetupbnfgrammar}
149     
150     \setupbnfgrammar
151       [\c!terminalstart=\tttf,
152        \c!terminalstop=,
153        \c!nonterminalstart=\mathematics{\langle},
154        \c!nonterminalstop=\mathematics{\rangle},
155        \c!is={ \mathematics{\longrightarrow}},
156        \c!option=\mathematics{\vert},
157 >>     \c!indentnext=\v!no]
158     
159     %D \macros
160     %D   {BNF}
161     %D
162     %D We also define a useful abbreviation to be used for header texts and labels.
163     
164     \logo[BNF]{bnf}
165     
166     %D And we use it here:
167