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Comment #3 on issue 939 by pekka.klarck: Remove possibility to create
scalar variables with list values in variable table
http://code.google.com/p/robotframework/issues/detail?id=939
Instead of catenating all cells together with a space, we could consider
catenating rows together with a newline similarly as documentation is
nowadays handled (issue 1009). That would ease creating multi line strings
considerably, but creating long single line strings wouldn't be that
convenient.
