+To make replying to email easier,
+.B notmuch reply
+takes an existing set of messages and constructs a suitable mail
+template, taking From: and To: messages and using those for the new
+To: address; copying Cc: addresses, building a suitable new subject
+including Re: at the front, adding the old message IDs to the
+References list and setting the In-Reply-To: field correctly.
+
+The resulting message template is output to stdout.
+
+.TP
+.BR show " <search-term>..."
+
+Shows all messages matching the search terms.
+
+See the documentation of
+.B search
+for details of the supported syntax of search terms.
+
+A common use of
+.B notmuch show
+is to display a single thread of email messages. For this, use a
+search term of "thread:<thread-id>" as can be seen in the first
+column of output from the
+.B notmuch search
+command.
+
+All messages will be displayed in date order. The output format is
+plain-text, with all text-content MIME parts decoded. Various
+components in the output,
+.RB ( message ", " header ", " body ", " attachment ", and MIME " part ),
+will be delimited by easily-parsed markers. Each marker consists of a
+Control-L character (ASCII decimal 12), the name of the marker, and
+then either an opening or closing brace, ('{' or '}'), to either open
+or close the component.