I would like to know what are the rules and laws concerning software code, which people post on the Internet for free.
I have been writing MS Access VBA code for many years now and I would like to start selling some modules, which I have written over the years. However, within my modules, i sometimes have sections of code or sub-modules, which I copied from people who posted various solutions on the Internet, in the public domain.
What are my legal obligations in this situation. Do I have to reference their work (I ask only because i don't know where some of it came from)? Am I within my rights to sell my modules, which contains small section of other peoples code (obtained from the internet forums)?
Please advise. Thanks.