Earlier quoted context omitted.
I'm not even sure it was ahead in its UX; it had a three button mouse, and daily operations needed all three mouse buttons. I had to use them for years at school and I feel you could never quite be sure what the third button would do. In some cases, it was like what shift-click does today, in other cases it selected menu items without closing the menu, in other cases it moved windows without bringing them to front an…
> you got different menus depending on whether you middle-clicked on the icon bar icon, or you right-clicked on the icon bar icon Are you sure you're talking about RISC OS? Because you're got the overview right but your details are weird. Right-clicking never pops a menu in RISC OS. Only the middle button does that. That's why the buttons in RISC OS have names. They're not "left, middle, and right" they are "select,…
So true!
For sure I was biased when I left RISC OS in favour of Windows 3.1 early 90s, but it took me years to get used to the clumsy COPY-CUT-PASTE metaphors still dominant today.