NAME
----
envelope

DESCRIPTION
-----------
Process message(s) enclosed in an 'envelope' message.

ARGUMENTS
---------
- Content

RESPONSE
--------
Message of type 'envelope' containing the response(s) to the 
processed message(s).

NOTES
-----
The 'Content' field contains a string representing a single message 
or multiple messages separated by '---' on a line of its own.

If the request's 'Content' element is encrypted the response's
'Content' element will be encrypted as well.