The code for such a thing would be:
On *:Text:*[color:red]word/phrase*:#Channel:{
commands go here
}
[/color]
Whereby, commands go here can be any number of things, for example:
notice $nick [color:red]your message [/color] - To notice the person who said the 'phrase/word'.
msg $nick [color:red]your message [/color] - To private message the person who said the 'phrase/word'.
msg $chan [color:red]your message [/color] - To notice the channel the person who said the 'phrase/word'.
Note that the *'s in the On Text, are called "wildcards" and have the following response:
phrase/word* - Checks if phrase/word is at the start of the sentence.
*phrase/word - Checks if phrase/word is at the end of the sentence.
*phrase/word* - Checks if phrase/word is anywhere in the sentence.
Eamonn.
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Edit; since you modified your posting, to reply to an action you simply change the code to:
On *:Action:*[color:red]word/phrase*:#Channel:{
commands go here
}
[/color]
to perform an action from a remote, you do.
/describe $chan [color:red]your message [/color] - to send a message to a channel.
/describe $nick [color:red]your message [/color] - to send a message the user in a private message.
Note, that in these events, $nick refers to the nickname who triggered the event, $chan refers to the channel that it was triggered in.
You can also change #channel to just # to trigger in all channels, or change #channel to ? which will only trigger in private messages, or * to trigger anywhere.
Eamonn.