Switch screen in nested session

I am in love witch screen :)

The first thing I do when I connect to a machine is start a screen session so I have multiply terminal sessions that I can switch by just a simple key stroke (CTRL-a followd by ").

CTRL-a is the most important command. When CTRL-a is send to the screen session, screen will accept the next character as a command for screen itself.

I often use nested screen session where I start a screen session on a remote machine with a terminal that is also part of a screen session. In that case I need to use the CTRL-a-a command to send a CTRL-a to the nested screen session.

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