When wire completely crosses the face, it cuts off the face along wire. Dragging a mouse with pressing the Shift key, the face is cut off horizontally or vertically.
It cuts off the adjacent quadrangle faces continuously. This can be used in increasing the number of the vertices with cutting a cylinder in round slices.
Please drag a mouse between the facing lines of
a quadrangle. When you drag a mouse with pressing the Shift key, you can cut
off joining the both center of lines.
It behaves quite contrary to [Cut straight faces]. It combines two quadrangles first and continues to combine adjacent two quadrangles.