[vile] How to insert text in a macro

[Chris Green]

I want to add some text to a file (just one line) in a stored
procedure and I just can't see how to do it.

If I do:-

    goto-beginning-of-file
    open-line-above-and-insert-chars

then I'm expected to type the line.  How do I actually get the text
inserted from the stored procedure?  Do I have to define a map!
command to do it and then execute it or is there a more elegant way? 

-- 
Chris Green