Machine readable vs. Human readable

I think the primary purpose is to have a machine readable script.  A
lisp-style syntax or postscript-style syntax would maximize machine
readability.

On the other hand, I'm not sure we should dismiss human readability
completely.  When might be able to find a reasonable compromise where the
script is machine readable, but something that wouldn't be too hard for 
the average human to hand edit.  I think Applescript is a reasonable 
example of this sort of syntax.