.msg $active $replace($1-,brnday,brandy)
Thats an example.
For instance, you can use $replace to replace multiple times within the one text string.
$replace(brnday: hello how are you,brnday,brandy,you,you?)
This would replace brnday with brandy, and you, with you?
This is how it works:
$replace(text string,word to replace,new word)
I hope that helps.