Which one doesn't really matter too much, I think, as long as it != .pde. ![]()
Personally, I like the parallel with Processing also, even though I have no idea what the "de" stands for -- Development Environment ??
Of course, in Italian, "Arduino" was the name of a king (as well as the bar in Ivrea), but the "ino" suffix is also signifies the diminutive.
.andy