Mathematica Limits: How to Evaluate Limits with 2 Variables Approaching 0

[Curl]

Can MMA take limits as 2 variables approach a value?
I want to take the limit as h and k both approach 0 for f(x+h,y+k)-...
Is there some trick to doing this?

 

[Bill Simpson]

The help system USED to show examples of Limit[Limit[expr,x->x0],y->y0] along with demonstrations of why the order might or might not matter. Unfortunately it looks like they have moved or removed that in the current help and I can't find it.