Keys to Category Filter Agenda

[Colin Baxter]

In agenda, you can filter by category by pressing '<' when point on that
particular category. To remove filtering, press '<' again. All this is
explained in the org-mode info. However the initial agenda buffer,
viewed by 'C-c a', gives the keys '<' for filtering but '>' to remove
the restriction. This surely is wrong since '>' is the key to call the
org-agenda-date-prompt, or am I missing something very basic here?

Nest wishes,

Colin Baxter.