<<< native
[ EText TextNormal "Inline floor, auto, normal line\160"
, EDelimited
    "\8970"
    "\8971"
    [ Right
        (EFraction
           NormalFrac
           (EGrouped
              [ EMathOperator "sin" , ESymbol Ord "\8289" , EIdentifier "\952" ])
           (EIdentifier "M"))
    ]
, EText TextNormal "\160the end."
]
>>> eqn
roman "Inline floor, auto, normal line " left ⌊ {sin  theta} over M right ⌋ roman " the end."