where can I find info about collapse-all

[Adam Kosmin <akosmin@xxxxxxxxxx>]

Using 1.5.4i, I see that <ESC>V I should be able to collapse all threads
but this isn't working as expected. Is this feature incomplete? Also, I
can't seem to find any information about it in 'man muttrc' or by
looking in the HTML manual up on mutt.org

Best,
Adam Kosmin

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