Formatting a Variable

[Jesse]

Can someone give me a quick lesson on what:

%-1s
%1s
%-1.1d
and
%1.1d

do.

I understand that one of them limits the number of characters shown.  One of
them pads a variable with x amount of spaces.  One of them right-justifies
a number by padding the left-side with zero's, and I have no idea what the
other one does.

Thanks.