In dir mode, Ctrl+F7/F8 in the tree window behaves as expected and removes all directory tags from the current branch. This does not work when using the same command from a flat directory list. I think it should do the same.
Also, it would be nice to have a function to (un)tag all *files* in all (visible) tagged directories (maybe in the Alt+(Un)Tag menu). Together with another new function to (un)tag all subdirectories of all tagged directories (again in Alt+(Un)tag menu) this would be the most flexible way to manipulate file tags from the dir mode I think. This way I could easily make a selection list of directories in which I want to (un)tag all files.
Jürgen.