Thank you Neil! This is really great. Though I didn't quite understand the part where he was talking about how that #ifndef contstruction doesn't prevents multiple inclusions. Or something along those lines. Do you know of any good text or other references that explain this stuff a little bit more in detail. (I know google is my friend, but if you know of any good sources that would be great.) Thanks for any help, cheers Tamas On Tue, Nov 8, 2016 at 7:47 PM, Neil wrote: > This was pretty enlightening... > https://www.youtube.com/watch?v=3DKG4hvjcZDh4 > > Cheers, > -Neil. > > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 "there is no spoon" --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .