To switch between modes, an additional check is required in each pass of the main program loop.
要在模式间进行切换，需要对主程序循环的每次循环执行额外的检查。
2
Table 1 lists several important control sequences that you can use to easily switch between modes.
表 1 列示了几种可用于在模式间灵活切换的重要控制键。
3
When editing flows, you generally tend to switch back and forth between the two editor modes continually, depending on the specific task you are performing.