There was a change between Current Directory browser of MATLAB 7.6 (R2008a) and MATLAB 7.7 (R2008b) in that the 'Type' field became labeled with an icon rather than the text 'Type'.
In the Current Directory browser, there is an icon of a white page with the right corner folded over. This is the 'Type' field. Click on this icon to sort by 'Type'.
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