texmath-0.10: tests/readers/mml/maction-08.native
[EDelimited "(" ")" [Right (EArray [AlignCenter,AlignCenter] [[[EGrouped [ENumber "12",EIdentifier "x"]],[ENumber "0"]],[[ENumber "0"],[ENumber "117"]]])]]
[EDelimited "(" ")" [Right (EArray [AlignCenter,AlignCenter] [[[EGrouped [ENumber "12",EIdentifier "x"]],[ENumber "0"]],[[ENumber "0"],[ENumber "117"]]])]]