Copy and Paste on GNU Screen

So recently I finally found out how to do copy and paste on gnu screen, previously I just do a drag on a mouse.

So copy and paste on gnu screen,

- ctrl-a [ 

- move to the first character of the string to copy, press enter

- move to the last character of the string to copy, press enter

- now to paste, press ctrl-a ]

p.s kina ashamed that it take me so long to figure out =.=