StormCinder wrote:and just as an FYI, the center/second number is 'elevation.' As Barbai explains it, you would read the coord as 'x,z,y'
As mentioned, just use the /loc and /waypoint systems. Don't try to nav via the compass...you'll lose your mind. 
SC
Ya its X, Z, YX and Y tells you the location, like if you where on a piece of graph paper.Z tell you the height of the location, and the majority of the time tend to be pointless.