Open build with asrock mobo - which pins to short for power button?

[urbanktm]

Hi,
I got the ASrock x87m Extreme 4 motherboard http://www.asrock.com/mb/Intel/Z87M%20Extreme4/

I dont have the case for it and trying to build it without the case (it's resting on cardboard for now)

When' i'm reading about shorting the power button header pins on the motherboard, I'm thinking there will be 2 pins for the power button on the motherboard which will have to be shorted.

I looked at the manual and found the System panel Header. There's a pin labelled PWRBTN#, but which other pin am I supposed to short it with? Is it going to have to be shorted with the GND right below it?
edit: added the pic below

 

[Outlander_04]

pwrbtn + gnd
just for a fraction of a second
ideally with an insulated screwdriver

 

[urbanktm]

pwrbtn + gnd
just for a fraction of a second
ideally with an insulated screwdriver

shouldn't matter which gnd right (there's one below and one on right in pic)? after all gnd is gnd.

update - i shorted the pwrbtn with the gnd to the right of it with a screwdriver tip. had to hold it there for a sec, but that worked.
thank u