New virtual procedures should always contain the prologue/postlogue, rather than require the user to remember the syntax

When you create a new virtual procedure, you should automatically get this in the transformation editor:

CREATE VIRTUAL PROCEDURE
BEGIN

– insert transformation logic here

END

Instead, we expect the user to remember this syntax, which is a very common source of mistakes.

As an alternative, we could hide this from the user completely, and maintain this standard stuff internally. This would reduce the # lines of code required to display on screen, and eliminate the possibility of mis-editing this stuff later.