emacs - system wide copy and paste

Using [M]-W and [C]-Y one can copy and paste inside emacs but it only works for the emacs buffers. In order to enable system wide copy\paste (through the clipboard) with other applications set the following in the .emacs file

(setq x-select-enable-clipboard t)

OR use

META-X set-variable RET x-select-enable-clipboard RET t

Lot more here

[src]