Nifty thing to teleport the nearest player in a range of 500 blocks to you..
If
Intersect [box] [prel:250,200,250] [prel:-250,-200,-250]
Then
var [x] = [pos:x]
var [y] = [pos:y]
var [z] = [pos:z]
Context [player] [target]
Teleport [player] [x,y,z]
Else
EndIf