1 [if] ." One,"
    0
    [if] bla bla
        [if]
            [if] this
            [then]
            is
        [then]
        not parsed
    [else]
        ." Two,"
    [then]
    ." Bla bla,"
[then]
." End,"

0
[if]
    blabla
[else]
    1
    [if]
        char A EMIT
    [else]
        [if]
            [if] this
            [then]
            is not parsed
        [then]
    [then]
[then]

char X EMIT