/// target pos when we enter the inset from the left by pressing "Right"
bool idxFirst(Cursor &) const;
/// target pos when we enter the inset from the right by pressing "Left"
bool idxLast(Cursor &) const;
///
/// target pos when we enter the inset from the left by pressing "Right"
bool idxFirst(Cursor &) const;
/// target pos when we enter the inset from the right by pressing "Left"
bool idxLast(Cursor &) const;
///