<<< native
[ EText TextNormal "Inline built-in verts, auto, no line\160"
, EDelimited
    "|"
    "|"
    [ Right
        (EFraction
           NormalFrac
           (EGrouped
              [ EMathOperator "sin" , ESymbol Ord "\8289" , EIdentifier "\952" ])
           (EIdentifier "M"))
    ]
, EText TextNormal "\160the end."
]
>>> eqn
roman "Inline built-in verts, auto, no line " left | {sin  theta} over M right | roman " the end."