<<< 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."
]
>>> tex
\text{Inline built-in verts, auto, no line~}\left| \frac{\sin\theta}{M} \right|\text{~the end.}