margins and loop with different multi-level factor variables

[Sa Fe]

Hi
I'm using the following code:

margins, at(x=(0(1)3))

however, I have multiple categorical variables that some of which take 3 levels, some take 2 levels, and others take 4 levels. I want to do a -foreach- loop to get the margins. however, I can't find a way to do this. I would appreciate any insights. Thanks,

[Clyde Schechter]

If these are all categorical variables, you do not need to use the -at()- option. There is a simpler syntax, and it lends itself easily to your situation. If your categorical variables are x, y, z, and w:

margins x y z w