Tip 14: Get Back to Normal Mode
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| Keystrokes | Effect | 
<Esc>
 | 
Switch to Normal mode | 
<C-[>
 | 
Switch to Normal mode | 
<C-o>
 | 
Switch to Insert Normal mode | 
References:
# If you open the file in vim, # then you can \"ayy@a the next line to execute the vim command: :h i_CTRL-[
Meet Insert Normal Mode
References:
# If you open the file in vim, # then you can \"ayy@a the next line to execute the vim command: :h i_CTRL-O
<C-o>zz in normal mode--
zz: redraws the screen with the current line int he middle of the window