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     There are two ways to tag a single file or subdirectory.  The selected
file or subdirectory is tagged unless it has already been tagged, in which
case it is untagged.

1) Using the keys [up arrow], [down arrow] or the mouse move the selection
   bar onto the desired file or subdirectory and press the key [Ins].
2) Move the mouse cursor onto the desired file or subdirectory and press
   the right button twice.

     When tagging a file or a subdirectory the total size of tagged files is
displayed in the Information Panel as well as the size of the subdirectory
to the right of its name.