GNU screen scroll by PageUp and PageDown

Add this line in your .screenrc  Use shift+pageup/pagedown to scroll

termcapinfo xterm* ti@:te@

screen tip: How to send Ctrl a to application

screen is a powerful window management tool under linux

All it’s command starts with ctrl+a ,so If you want to send ctrl+a to an application (like emacs), you can type

ctrl+a a

This tip is hard to find, so I post it.