Switching Between Insert Mode and Overwrite Mode

利用滑鼠：

在狀態列中指示目前模式的區塊上按一下，可切換至其他模式：

• Insert

  The text cursor is a blinking vertical line. Click on the area to activate the overwrite mode.

• Overwrite

  The overwrite mode is active. The text cursor is a blinking block. Click on the area to activate insert mode.