Thank you for the very interesting links. I used UML extensively during my studies in the nineties, back then on Unix machines. Interestingly, even then, it was

Thank you for the very interesting links. I used UML extensively during my studies in the nineties, back then on Unix machines. Interestingly, even then, it was possible to work together on a UML concept. I'm not sure anymore if the novelty of working with a graphical UML program was the motivation, or the opportunity to program in something other than Modula. In the end, after my studies, I still had to program only in C++. Once accustomed to the relative directness, it is difficult to embrace new innovative concepts. But I would welcome it.