Shortcut for directory in File Open/Save dialog?

[Matej Cepl <ceplm@seznam.cz>]

Hi,

I know this is really stupid question and I will probably show my imbecility
for asking this, but what is the shortcut in the File Open/Save dialog for
switching cursor to the directory feed (the one on the top)? I really
cannot find it anywhere.

Thanks,

Matej
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