What are all the in-game chat commands available in LoL?

Question

I've heard that there are some commands far from the ones shown in /help list.

Which are they?

Answer 1

• /help or /? lists most commands
• /all sends a message to all chat
• /whisper or /w or /msg sends a private message to a friend
• /r replies to last PM
• /mute mute the specified player*
• /ignore add a player to your pvp.net ignore list*
• /surrender or /ff vote to surrender
• /nosurrender of /noff vote against surrendering
• /pause or /p pause a tournament match
• /unpause or /resume resume a paused game
• /joke or /j your champ tells a joke
• /taunt or /t your champ taunts
• /dance or /d your champ dances
• /laugh or /l your champ laughs
• /note or /n writes a note to MyNotes.txt, which can be found in RADS\solutions\lol_game_client_sln\releases\<current release>

* you can use @-prefix to use champion name, /mute @Heimerdinger for example.

The ones missing from /help that are on this list are /mute, /ignore, /pause and /unpause (and their aliases).

I cross checked a few lists and my memory and then tested them in-game. It's probably still missing some forgotten or hard-to-find commands.