sub as_HTML {
    # Bla bla bla
    # Your typical subroutine initial stuff we don't care much about...

    if ( ... ) {   
    # Some condition I don't really understand since I didn't bother to
    # understand the initial stuff above. But it didn't seem to relevant.

    # A whole lot of stuff happens here, seemingly all dealing with tags,
    # not with text.


                else {    # it's a text segment


                # Hey! Cool.
                # One more line of bla bla bla, before...:
                    
                    HTML::Entities::encode_entities( $node, $entities )

                # Yeah, this sounds about right. Let's look at that.
                    
    # More stuff I didn't bother to look at...
}