How to create a webrev from the top level directory

[Pete Brunet]

I've been asked to create a webrev.  According to
http://openjdk.java.net/guide/webrevHelp.html
from the toplevel directory (macosx-port) I should execute
ksh ./make/scripts/webrev.ksh -f
but that produced a lot of error messages so I did
cd jdk
ksh ../make/scripts/webrev.ksh
and that created my webrev

What is the proper command to get it to work from the parent directory?

Pete