Here document

Heredocs in Raku use the :to modifier to a quoting operator, such as q or qq. The indentation of the end marker is removed from every line.

my $color = 'green';
say qq :to 'END';
    some line
    color: $color
    another line
    END

Output:

some line
color: green
another line

Note that the quotes around the "END" are not magic --- the marker is just a regular string; it's the `q` or `qq` that decides whether or not the heredoc interpolates.

Multiple here docs may be stacked on top of each other.

my $contrived_example = 'Dylan';
sub freewheelin() {
        print q :to 'QUOTE', '-- ', qq :to 'AUTHOR';
          I'll let you be in my dream,
            if I can be in yours.
        QUOTE
                Bob $contrived_example
                AUTHOR
}

freewheelin;

Output:

  I'll let you be in my dream,
    if I can be in yours.
-- Bob Dylan

Both q and qq are specialised forms of Q which comes with many adverbs. Here a heredoc that only interpolates @-sigils.

my @a = <1 2 3 4>;
say Q :array :to 'EOH';
    123 \n '"`
        @a$bc
        @a[]
    EOH

Output:

123 \n '"`
    @a$bc
    1 2 3 4