+:tell
+tell <nick> <message ...>
+ Leaves a message for someone, which will be delivered according to
+ their `!set !tellme'. I will tell you about your undelivered tells
+ whenever I see you arriving, or when you say `!ping'. See also
+ `help !untell' and `help !delmsg'.
+
+:untell
+!untell <nick> ...
+ Forgets about all message(s) you've sent with !tell to particular
+ nick(s). Use !delmsg to delete messages sent *to* you. There is no
+ way to untell individual messages to the same nick. If your nick is
+ secure, you must !identify yourself to use untell.
+
+:tellme
+The !tellme command repeats any messages you have outstanding.
+!set tellme configures how you receive messages sent with !tell:
+ set tellme insecure When I see you.
+ set tellme secure [<!interval>] Hide body (reminding) until ident.
+ set tellme reject Do not accept messages.
+ set tellme mailto <email-addr> By email. (Secure nicks only.)
+Default: `secure 600'. For insecure nicks `secure' == `insecure'.
+To set when to consider messages delivered (see `help !untell'):
+ set tellme unreliable Tell you once, then forget.
+ set tellme remind [<every-interval> [<within-interval>]]
+ Remind until you talk on channel within <within-interval>
+ of me having told you. (Default is remind 1h 30s.)
+ set tellme pester <interval> Remind until you say !delmsg
+
+:delmsg
+delmsg [<nick> ...]
+ Forgets about !tell messages I've passed on: either all of them, or
+ only those from certain nicks. Necessary if you !set !tellme pester
+ or reliable, and also works with remind, but not with unreliable.
+ Use !untell to delete messages you've sent, rather than received.
+