Help with retroarch exiting

[Runamukk]

I'm messing with shaders in retroarch and after accessing the menu, while in game, I cant figure out how to exit the menu to check out the shader I applied without quitting retroarch all together and having to re start the game.  Can someone help?

[Runamukk]

Basically...how do you exit the retroarch menu while in game without exiting the game?

[DOS76]

f1 should take you into and out of the menu