I honestly don't know, I for sure couldn't foresee that some years later I would have been called from others to work on the same sources. The work environment was really good and I wished the project lasted more, but alas all good things must come to an end. Anyway I had no explicit reason to leave traces other than maybe some odd reasoning after listening to a ("toxic", as some of us realized later) colleague talking about bad experiences in other places and signing his sources in a similar way, but to me it was mainly a "Kilroy was here" thing.