Scanning first line of document to get jobname

Hello,

I just learned that if my documents starts directly (no space, no
empty line) with
%& --jobname=mynewjobname

then the tex engines of miktex (pdflatex, latex etc) changes the
jobname of the document to mynewjobname.

Can a similar scan be added to the various macro files of winedt so
that winedt close mynewjobname.pdf (if open) and opens in the viewers
mynewjobname.pdf or .dvi?

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-- 
Ulrike Fischer