I read https://www.scintilla.org/ScintillaDoc.html#ScrollingAndAutomaticScrolling and I understood that, for this particular Issue, it would suffice to expose the `CARET_JUMPS` variable. If `CARET_EVEN` if left as is (value 1), then when typed character goes out of visibility / reaches limit, display will : * move by one position when `CARET_JUMPS=0` * jump and centre on the caret (last typed character) when `CARET_JUMPS=1`