I am trying learn how to send an email notification in a workflow.
I don't understand and could not locate this class and method.
CustomWFUtils:

oEmailNotify($subject, $body);
I am trying to understand the some one's code here.
Could someone explains this method or explain how to send an email notification in a workflow?
I am getting page not found error when I execute this workflow.
Please see two files: (1) my workflow file:johnny_submit.wft
(2) ipl file:test.ipl
Any help would be appreciated.
Thanks