You could add a comment... but when we began using #DEFINE rather than embedded giant expressions when building HL7 strings, maintenance and debugging became vastly easier. I've been a great fan of #DEFINE ever since. ;-) FWIW, if you always use a .h file in your apps you can successfully obfuscate your code automatically even if some swine manages to decompile it.
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1
