<<< native
[ EArray
    [ AlignCenter , AlignCenter , AlignCenter ]
    [ [ [ EGrouped
            [ EPhantom (EText TextNormal "F")
            , ESpace (0 % 1)
            , EIdentifier "HT"
            , ESpace (0 % 1)
            , EPhantom (EText TextNormal "F")
            ]
        ]
      , [ ESymbol Rel "=" ]
      , [ EIdentifier "TH" ]
      ]
    ]
]
>>> eqn
matrix{
ccol{ {hphantom {roman "F"} fwd 0 HT fwd 0 hphantom {roman "F"}} }
ccol{ = }
ccol{ TH }
}