Decompiling specifically voids license (wonder why)
In every major software agreement I've read, decompiling is specifically forbidden or it will void the license. I wonder why ... oh wait a minute, Excel doesn't find what I was looking for because when I sorted the sheet, the pointers got screwed up ... It would sure be embarrassing for a Major Software House to have their s##t code exposed for all to see. And they actually charge money for it. Oh, that's why. Decompile at your own risk.
[Posting anonymously because I have to use Excel as it's Corporate Standard, and I don't want trouble.]