It also remembers the last-used data set names on each panel, so the next time the panel is used the names are already filled in.
2.
Data set names ( DSNs, mainframe term for filenames ) are organized in a hierarchy whose levels are separated with dots, e . g . " DEPT01 . SYSTEM01 . FILE01 ".
3.
Italian data set name only, and I think the author team in Rome would find it odd to see you trying to use their dataset name as a source for a unique way of using the English term East Africa!