scrolling inside screen

I love screen, I use it for everything (remote session, slime.vim). But sometimes I hate it. I can't scroll! Well, no that is not true. I didn't know how to scroll.

First you have to turn on the buffer. Create a .screenrc in your home directory with the following content:

# define a bigger scrollback, default is 100 lines
defscrollback 10000

You can access the scrollback buffer by entering "copy mode", which is accomplished by typing

C-a ESC

Here is the full explanation.