--- parse tree ---
[ Code
    "test/typ/math/multiline-05.typ"
    ( line 1 , column 2 )
    (Let
       (BasicBind (Just (Identifier "test")))
       (FuncExpr
          [ NormalParam (Identifier "x") , NormalParam (Identifier "y") ]
          (Block
             (CodeBlock
                [ If
                    [ ( Equals (Ident (Identifier "x")) (Ident (Identifier "y"))
                      , Block (Content [ Text "\9989" ])
                      )
                    , ( Literal (Boolean True)
                      , Block
                          (Content
                             [ Text "\10060"
                             , Text "("
                             , Code
                                 "test/typ/math/multiline-05.typ"
                                 ( line 1 , column 47 )
                                 (FuncCall
                                    (Ident (Identifier "repr"))
                                    [ NormalArg (Ident (Identifier "x")) ])
                             , Space
                             , Text "/"
                             , Text "="
                             , Space
                             , Code
                                 "test/typ/math/multiline-05.typ"
                                 ( line 1 , column 59 )
                                 (FuncCall
                                    (Ident (Identifier "repr"))
                                    [ NormalArg (Ident (Identifier "y")) ])
                             , Text ")"
                             ])
                      )
                    ]
                ]))))
, SoftBreak
, Comment
, Equation
    True
    [ MAttach
        (Just
           (MGroup
              Nothing
              Nothing
              [ Text "n"
              , Code
                  "test/typ/math/multiline-05.typ"
                  ( line 3 , column 10 )
                  (Ident (Identifier "in"))
              , Code
                  "test/typ/math/multiline-05.typ"
                  ( line 3 , column 13 )
                  (Ident (Identifier "NN"))
              , HardBreak
              , Text "n"
              , Code
                  "test/typ/math/multiline-05.typ"
                  ( line 3 , column 20 )
                  (FieldAccess (Ident (Identifier "eq")) (Ident (Identifier "lt")))
              , Text "5"
              ]))
        Nothing
        (Code
           "test/typ/math/multiline-05.typ"
           ( line 3 , column 3 )
           (Ident (Identifier "sum")))
    , Text "n"
    , Text "="
    , MFrac
        (MGroup
           (Just "(")
           (Just ")")
           [ MGroup
               Nothing
               Nothing
               [ Text "5"
               , MGroup (Just "(") (Just ")") [ Text "5" , Text "+" , Text "1" ]
               ]
           ])
        (Text "2")
    , Text "="
    , Text "15"
    ]
, ParBreak
]
--- evaluated ---
document(body: { text(body: [
]), 
                 math.equation(block: true, 
                               body: { math.attach(b: { text(body: [n]), 
                                                        text(body: [∈]), 
                                                        text(body: [ℕ]), 
                                                        linebreak(), 
                                                        text(body: [n]), 
                                                        text(body: [≤]), 
                                                        text(body: [5]) }, 
                                                   base: text(body: [∑]), 
                                                   t: none), 
                                       text(body: [n]), 
                                       text(body: [=]), 
                                       math.frac(denom: text(body: [2]), 
                                                 num: { text(body: [5]), 
                                                        math.lr(body: ({ [(], 
                                                                         text(body: [5]), 
                                                                         text(body: [+]), 
                                                                         text(body: [1]), 
                                                                         [)] })) }), 
                                       text(body: [=]), 
                                       text(body: [15]) }, 
                               numbering: none), 
                 parbreak() })