--- parse tree ---
[ Code
    "test/typ/math/cancel-04.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/cancel-04.typ"
                                 ( line 1 , column 47 )
                                 (FuncCall
                                    (Ident (Identifier "repr"))
                                    [ NormalArg (Ident (Identifier "x")) ])
                             , Space
                             , Text "/"
                             , Text "="
                             , Space
                             , Code
                                 "test/typ/math/cancel-04.typ"
                                 ( line 1 , column 59 )
                                 (FuncCall
                                    (Ident (Identifier "repr"))
                                    [ NormalArg (Ident (Identifier "y")) ])
                             , Text ")"
                             ])
                      )
                    ]
                ]))))
, SoftBreak
, Comment
, Code
    "test/typ/math/cancel-04.typ"
    ( line 3 , column 2 )
    (Set
       (Ident (Identifier "page"))
       [ KeyValArg (Identifier "width") (Literal (Numeric 200.0 Pt))
       , KeyValArg (Identifier "height") (Literal Auto)
       ])
, SoftBreak
, Equation
    False
    [ Text "a"
    , Text "+"
    , Code
        "test/typ/math/cancel-04.typ"
        ( line 4 , column 6 )
        (FuncCall
           (Ident (Identifier "cancel"))
           [ BlockArg [ Text "x" ]
           , KeyValArg (Identifier "length") (Literal (Numeric 200.0 Percent))
           ])
    , Code
        "test/typ/math/cancel-04.typ"
        ( line 4 , column 31 )
        (Ident (Identifier "minus"))
    , Code
        "test/typ/math/cancel-04.typ"
        ( line 4 , column 33 )
        (FuncCall
           (Ident (Identifier "cancel"))
           [ BlockArg [ Text "x" ]
           , KeyValArg (Identifier "length") (Literal (Numeric 50.0 Percent))
           , KeyValArg
               (Identifier "stroke")
               (Block
                  (CodeBlock
                     [ Plus (Ident (Identifier "red")) (Literal (Numeric 1.1 Pt)) ]))
           ])
    ]
, SoftBreak
, Equation
    True
    [ Text "b"
    , Text "+"
    , Code
        "test/typ/math/cancel-04.typ"
        ( line 5 , column 7 )
        (FuncCall
           (Ident (Identifier "cancel"))
           [ BlockArg [ Text "x" ]
           , KeyValArg (Identifier "length") (Literal (Numeric 150.0 Percent))
           ])
    , Code
        "test/typ/math/cancel-04.typ"
        ( line 5 , column 32 )
        (Ident (Identifier "minus"))
    , Code
        "test/typ/math/cancel-04.typ"
        ( line 5 , column 34 )
        (FuncCall
           (Ident (Identifier "cancel"))
           [ BlockArg [ Text "a" , Text "+" , Text "b" , Text "+" , Text "c" ]
           , KeyValArg (Identifier "length") (Literal (Numeric 50.0 Percent))
           , KeyValArg
               (Identifier "stroke")
               (Block
                  (CodeBlock
                     [ Plus (Ident (Identifier "blue")) (Literal (Numeric 1.2 Pt)) ]))
           ])
    ]
, ParBreak
]
--- evaluated ---
document(body: { text(body: [
]), 
                 text(body: [
]), 
                 math.equation(block: false, 
                               body: { text(body: [a]), 
                                       text(body: [+]), 
                                       math.cancel(body: text(body: [x]), 
                                                   length: 200%), 
                                       text(body: [−]), 
                                       math.cancel(body: text(body: [x]), 
                                                   length: 50%, 
                                                   stroke: (thickness: 1.1pt,
                                                            color: rgb(100%,25%,21%,100%))) }, 
                               numbering: none), 
                 text(body: [
]), 
                 math.equation(block: true, 
                               body: { text(body: [b]), 
                                       text(body: [+]), 
                                       math.cancel(body: text(body: [x]), 
                                                   length: 150%), 
                                       text(body: [−]), 
                                       math.cancel(body: { text(body: [a]), 
                                                           text(body: [+]), 
                                                           text(body: [b]), 
                                                           text(body: [+]), 
                                                           text(body: [c]) }, 
                                                   length: 50%, 
                                                   stroke: (thickness: 1.2pt,
                                                            color: rgb(0%,45%,85%,100%))) }, 
                               numbering: none), 
                 parbreak() })