macros vs inline question

[D1104@AppleLink.Apple.COM (Computer SW Consult, J Stulin,PAS)]

Dear Friends:
 
 
In a current project I have been using Macros extensively to avoid function
calling overhead. I am aware that Common Lisp supplies an INLINE facility which
may be preferable to using Macros. I have two questions.
 
First, under what circumstances (if any) does MCL satisfy the INLINE request.
 
Second, is the primary proper use of Macros to create new syntactical
structures?
 
Thanks,
 
 
Jeffrey Stulin