/media/sda-magnetic/david/Dok-15-2023-11-27/fernuni-hagen/cs-i-ii/old-cs-2-01/informatik2/lex-yacc-bash-etc/grammatik01.txt


numexpr     ->  numexpr + term | term
term        ->  term * factor | factor
factor      ->  id | const | (numexpr)