In a message dated 6/14/2007 1:40:34 AM Eastern Standard Time, florian@freepascal.org writes: How does the pascal macro compiler solve it? It tries to solve it for bit/booleans arrays but not for subrange types which are much harder because of endian issues. Tries because it doesn't take care of things like debugging. I try to provide the library functions which the Macro Compiler users find most useful. If there is a need for subrange bit fields, and you can describe clearly what is needed, then I will try to provide it on a time-available basis. If this is a make-or-break issue for you, then I will try harder. Frank ************************************** See what's free at http://www.aol.com.