RBR - update SC_MULTISTEPUNDOREDO description to match actual behavior and add "cautionary" paragraph to "Indicators" section.
RBR - update SC_MULTISTEPUNDOREDO description to match actual behavior and add "cautionary" paragraph to "Indicators" section.

R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone