right now, the data editor doesn't visibly discriminate between NA, <NA> or "" 
in cells, they're all plain white, which can be a problem especially when 
dealing with strings. would it be much work to have those "empty" cells show 
some kind of greyed-out indicator wheter they are just empty strings ("") or 
really NA?

related to this, i repeatedly had a problem with SPSS data sets where 
read.spss() did not trim string values, so they ended up like

  "value                     "

and you didn't see the spaces. i have no idea yet how to solve this nicely 
(meaning: make it visible), but it's an awful trap if you're wondering why the 
hell your script doesn't find a match for "value".

viele grüße :: m.eik

  dipl. psych. meik michalke
  institut f"ur experimentelle psychologie
  abt. f"ur diagnostik und differentielle psychologie
  heinrich-heine-universit"at d-40204 d"usseldorf

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