EXTENDED BACKUS-NAUR FORM
\ɛkstˈɛndɪd bˈakəsnˈɔː fˈɔːm], \ɛkstˈɛndɪd bˈakəsnˈɔː fˈɔːm], \ɛ_k_s_t_ˈɛ_n_d_ɪ_d b_ˈa_k_ə_s_n_ˈɔː f_ˈɔː_m]\
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Any variation on the basic Backus-Naur Form (BNF)meta-syntax notation with (some of) the following additionalconstructs: square brackets "[..]" surrounding optionalitems, suffix "*" for Kleene closure (a sequence of zero ormore of an item), suffix "+" for one or more of an item,curly brackets enclosing a list of alternatives, andsuper/subscripts indicating between n and m occurrences.All these constructs can be expressed in plain BNF using extraproductions and have been added for readability andsuccinctness.
By Denis Howe
Word of the day
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.