/tellunit
/group
/opt
/rndcmd

Straight substitutions
Unit information

If you would prefer only to have certain functionality from MacroTalk (for
instance, if you have another addon that provides similar functionality),
you can disable various modules by renaming or deleting the corresponding
.lua files. You can safely remove MacroTalkChatOptions, MacroTalkCommands,
and MacroTalkSubstitutions which correspond to Conditional/Random chat
commands, Slash commands, and Text substitutions, respectively.

/tellunit (/tu, /whisperunit, /wu) <unit> <message>

Sends a whisper to the specified unit. See
http://www.wowwiki.com/API_TYPE_UnitId for a list of units

Example:

/cast Innervate
/tellunit target Incoming innervate

/group (/gr) <message>

Picks battleground, raid, or party chat depending on which type of group
you are in.

/opt [options] <slash command>; [options] <slash command>; ...

Picks from multiple slash commands given the options. You can only use
slash commands that don't trigger secure functions. Chat commands,
emotes, scripts, etc. are OK. /cast, /use, etc. are off limits.

Note: the sub-commands cannot use macro options since the semicolons
would cause ambiguity.

Example:

/opt [button:2] /bye; /wave

/rndcmd [options] <command 1>\<command 2>; [options] <command 3>\<command 4>...

Picks a random slash command out of the group chosen based on the
given options. Each group is a list of slash commands separated by the
backslash (\) character (this is in contrast to commas used for the
built-in random commands--commas are just too common in chat messages).

Note: like the /opt command, the sub-commands cannot use macro options
and you can't use any secure commands.

Example:

/rndcmd [swimming] /y Help! I'm Drowning! \ /s The water's great!;
/s Time for a swim... \ /dance

All chat commands (/say, /tell, /guild, etc.) can now accept macro options.
To use this functionality, simply start the command with /opt. Note:
[target=] has no effect on the output of the chat commands; it only affects
the other conditionals in the clause.

Example:

/optsay [swimming] gurgle; [mounted] The cavalry has arrived!

Example:

/cast [target=focus] Polymorph
/optgroup [target=focus, exists] Sheeping %f

Similar to the macro options, you can now add /rnd to the beginning of any
chat command to pick a random saying. The /rnd___ commands also take options
to pick a different list of sayings. The lists themselves are separated by
the backslash symbol (\).

Example:

/rndyell ZOMG! \ WTF?! \ You there! Check out that noise!

Example:

/rndsay [outdoors] Ahhh, the Great Outdoors! \ What a lovely day!;
I wish I could go outside right now \ Must... Leave... Building...

MacroTalk offers a variety of substitutions in addition to %t of the default
UI. Substitutions are prioritized by the length of the code; longer codes
are processed first. This means that %tl will be processed before %t. The
codes are case-insensitive so %Tl is equivalent to %tL.

Straight substitutions:

%n - Your name
%z - Your current zone
%sz - Your current sub-zone (or zone if no sub-zone)
%loc - Your map coordinates

Unit information:

%t - Name of your target (built in, but listed for consistency)
%f - Name of your focus
%m - Name of mouseover unit
%p - Name of your pet
%tt - Name of your target's target

You can suffix those with one of the following to return other pieces of
data about the unit:

l - Level
c - Class
g - Gender
gb - Gender (blank if no gender)
r - Race
rb - Race (blank if no race)
gu - Guild
gu - Guild (blank if no guild)
rm - Realm (works with other realms than yours like in a dungeon)
h - Health (XX/XX)
hp - Health percentage (XX%)
ma - Mana - Not just 'm' because it conflicts with mouseover
mab - Mana (blank if no mana)
mp - Mana percentage
mpb - Mana percentage (blank if no mana)
ic - Raid icon
icb - Raid icon (blank if no icon)

Example:

/p Sheeping %f (level %fl %fg %fr %fc)
/cast [target=focus] Polymorph

Sample result: Sheeping Cogwheel (level 64 male Gnome Warrior)

You can also use the suffixes without a unit code to return information
about yourself.

Example:

/s I'm a level %l, %g, %r %c.

Sample result: I'm a level 68, male, gnome warrior.

All thanks to CogWheel for his really nice work on this addon, I am here only to maintain it alive