-thread giving a relative date for the thread and a subject.
-
-Pressing RET on any line displays that thread. The '+' and '-'
-keys can be used to add or remove tags from a thread. The 'a' key
-is a convenience key for archiving a thread (removing the
-\"inbox\" tag).
-
-Other useful commands are `notmuch-search-filter' for
-filtering the current search based on an additional query string,
-`notmuch-search-filter-by-tag' for filtering to include only
-messages with a given tag, and `notmuch-search' to execute a new,
-global search.
+thread giving a summary of the thread (a relative date, the
+number of matched messages and total messages in the thread,
+participants in the thread, a representative subject line, and
+any tags).
+
+By default, pressing RET on any line displays that thread. The
+'+' and '-' keys can be used to add or remove tags from a
+thread. The 'a' key is a convenience key for archiving a
+thread (removing the \"inbox\" tag). The '*' key can be used to
+add or remove a tag from all threads in the current buffer.
+
+Other useful commands are 'f' for filtering the current search
+based on an additional query string, 't' for filtering to include
+only messages with a given tag, and 's' to execute a new, global
+search.
+
+Complete list of currently available key bindings: