There are a couple of commands that allow you to change settings from the chat inputbox. (You should probably roughly know what you're doing before using these.)

Commands [back to menu]

/set <setting> <value> changes a setting
/get <setting> shows the current value of a setting
/reset <setting> resets the setting to the default (hard-coded) value
/clearsetting <setting> sets string settings to an empty string
/add <setting> <value> adds a string to a list of strings
/remove <setting> <value> removes a string from a list of strings

The following are settings that can be changed using the setting commands. A lot of those - but not all - can also be changed in the Settings Dialog, which is more convient in some cases. This does not show all settings.

For Addressbook related settings, see Addressbook Help.

Settings with a slightly darker background color are settings that are not available in the Settings Dialog and can only be changed via commands (and sometimes also commandline options).

Setting	Type	Values	Default	Description
dontSaveSettings	Boolean		false	Don't save settings when Chatty is closed (`-ds` commandline option).
timeoutButtons	String	See Command Settings Help	too long	Buttons in the Userinfo dialog (not only timeout buttons)
userContextMenu			empty	Custom entries in the User Context Menu
channelContextMenu			empty	Custom entries in the Channel Context Menu
twitchnotifyAsInfo	Boolean		true	Show messages from user "twitchnotify" as info messages. Turn off to show as regular message, so you can e.g. highlight it.
backupDelay	Integer	Number of days	1	How many days to wait between a Backup
backupCount	Integer	Number of backups	5	How many backups to rotate through
hotkeys	List	Cannot be edited by command		The hotkeys that are currently defined
windows	Map	Cannot be edited by command		The windows/dialogs positions/sizes as they where loaded when you started Chatty (NOT necessarily the current ones).
globalHotkeysEnabled	Boolean		true	Enable global hotkeys that are defined in the settings. Disable this to temporarily turn off the global hotkeys you defined.
imageCache	Boolean		true	Whether images (emotes, usericons) are cached in local files.

Font

Setting	Type	Values	Default	Description
font	String	Font name, e.g. `Arial` or `Arial Bold`	Consolas	The font used for the chat
fontSize	Integer	Font size, e.g. `14`	14	The font size used for the chat
lineSpacing	Integer	Numbers between `-1` and `10` probably make the most sense.	3	The space between chatlines
inputFont	String	Font name and size, as understood by Font.decode()	Dialog 14	The font for the chat input box (should only be set to Java logical fonts like `Dialog` or `Monospaced`, otherwise fallback fonts in chat may not work correctly*)
dialogFontSize	Integer	Font size or `-1` to keep default	-1	Setting to customize the font size of dialogs, currently experimentel and only for User Info Dialog.

* If a character isn't contained in the chat font you have currently configured, Java will try to find it in the fallback fonts. While still not all characters will be displayed this way, it should work a lot better. You can also add your own fallback fonts to improve the situation further. However, setting the input box font to your chat font somehow breaks the fallback font mechanism, resulting in less characters being able to be displayed (like in versions before 0.7.3).

Time Dr. Freeman..

Setting	Type	Values	Default	Description
timestamp	String	Format as understood by SimpleDateFormat or `off`	[HH:mm]	The timestamp used for all lines in chat
timestampTimezone	String	As understood by Timezone.getTimeZone() e.g. `GMT+2` or `PST`	`empty`	The timezone used for the `timestamp`
logTimestamp	String	Format as understood by SimpleDateFormat or `off`	[HH:mm:ss]	The timestamp used for all lines in the chatlog files

Server/Connection Settings

Setting	Type	Values	Default	Description
serverDefault	String	The server address, host or IP	irc.twitch.tv	Default server to connect to, which can be changed in the Settings Dialog and is saved between sessions
portDefault	String	One or more ports, seperated by comma	6667,80	Default port to connect to, which can be changed in the Settings Dialog and is saved between sessions
server	String	The server address, host or IP	empty	If set, overrides the `defaultServer`, can be set by commandline options, not saved in between sessions
port	String	One or more ports, seperated by comma	empty	If set, overrides the `defaultPort`, can be set by commandline options, not saved in between sessions
username	String	Your username	empty	Public part of the Login data to login into chat
token	String	OAuth token	empty	Secret part of the Login data to authorize with Twitch, don't show this to anyone. You shouldn't change this directly, but use the `/changetoken` command instead when manually setting the token.
spamProtection	String	messages/seconds, e.g. `10/20`	18/30	How many messages Chatty allows you to send to the server in the given time, to prevent a ban from chat
membershipEnabled	Boolean		true	Refers to the `twitch.tv/membership` IRCv3 CAP, which enables sending a userlist and joins/parts, allowing for a correct userlist in Chatty and showing of joins/parts in chat (if separately enabled of course)

Stream Chat

Setting	Type	Values	Default	Description
streamChatChannels	List[String]	Channel name (with leading #) or empty	empty	Forwards messages from the given channels to Stream Chat.
streamChatMessageTimeout	Integer	Number of seconds, negative to disable	-1	How long messages are displayed before they disappear from Stream Chat.
streamChatBottom	Boolean		true	Start inserting messages at the bottom. Messages are always inserted below previous messages, but disabling this setting will make them start at the top. Requires a restart of Chatty after changing to take any effect.
streamChatResizable	Boolean		true	Whether the Stream Chat dialog is resizable by dragging the edges.

Stream Highlights

Setting	Type	Values	Default	Description
streamHighlightChannel	String	Channel name (with leading #) or empty	empty	Allows moderators in the given channel to run the !addStreamHighlight command.
streamHighlightChannelRespond	Boolean		false	If this is enabled, Chatty sends a message to chat when a moderator uses the !addStreamHighlight command. Otherwise the response to the command is only shown locally.
streamHighlightCommand	String	The command to use for moderators	!addstreamhighlight	Change this to define the command that can be used by mods to add stream highlights in the channel defined with the `streamHighlightChannel` setting.

Debugging

Setting	Type	Values	Default	Description
debugLogIrc	Boolean		false	Log raw IRC messages in the Debug Window.
debugLogIrcFile	Boolean		false	Log raw IRC messages to the debug_irc.log file in the settings directory.

Bot Badges

Setting	Type	Values	Default	Description
botBadgeEnabled	Boolean		true	Show bot badge in chat for known bots.
botNames	List[String]	Name of the bot	some default names	List of locally defined known bots. You have to restart Chatty for changes to take effect.
botNamesBTTV	Boolean		true	Use bot names from BTTV API. BTTV emotes have to be enabled for this to work.
botNamesFFZ	Boolean		true	Use bot names from FFZ API. FFZ emotes have to be enabled for this to work.

Setting Commands