it does the same as " $+ text $+ ".
From the help file:
;------------------------------------------
/silly /say Hel $+ lo th $+ ere $+ !
Parameters are normally separated by a space. To make mIRC combine parameters you can use the $+ identifier. The above line will say Hello there!.
;------------------------------------------
and it working the same way as $+(Hel,lo th,ere,!) so , just tell mirc it should combine the word or signs.
And you can use it in a variable you set. %var return hello and you want a "dot" after the word hello, then you can do $+(%var,.) Hope you understand what it does.
