// At cursor position 0, try to merge the paragraph with the one before it.
// Ignore change tracking, i.e., physically remove the end-of-par character
bool backspacePos0(Cursor & cur);
// At cursor position 0, try to merge the paragraph with the one before it.
// Ignore change tracking, i.e., physically remove the end-of-par character
bool backspacePos0(Cursor & cur);