Daewoo DP51 Tackdown

I bought a Daewoo DP51 9MM pistol second hand with no manual. It is beyond me as to how the slide is removed for claning. I have had 1911s, S&W 6904 and other autos which the Slide lock is the key to removing the slide and barrel.
If someone could please relate to me how to disasemble this pistol I would be extreemly greatfull!!!!!!!!!!!

Don<BR>