External.php: How to Add A Credit Text to the Beginning of Message In RSS Feed?

[way2xtreme]

Hi
I'd like to add a line of URL text right before the feed content so the reader can go to the original post and read the rest of message if they want to. I would like to have our content source be clearly visible.

Where in the External.php can I add this?
Thanks for your help :up:
W

example:

Before:

Passion and Rage, in Tight Focus

A recent screening of “Ph?dre,” starring Helen Mirren, was the first “live” broadcast of a stage production from the National Theater in London...

After:

Passion and Rage, in Tight Focus

(http://ABCD.com/showthread?1234) A recent screening of “Ph?dre,” starring Helen Mirren, was the first “live” broadcast of a stage production from the National Theater in London...