How to hide packages body

What should I do to hide the packages body? I saw that for Oracle defined packages the body is somehow encrypted.

Thanx

Have it Wrapped...
Here is the Command.
On Command Prompt

Wrap ifile=c:\yourpackagebodyfile ofile=c:\hidepack.sql

On Sql
@c:\hidepack.sql


Now Your Package Body is un readable.

Thanks

That was quick. Thanx