_Added in 1.9.2_

*/renwin <@oldname> <@newname> [topic]*

Allows you to change the name of an existing window to a different one, and an optional topic can be specified.

*Parameters*

<@oldname> - Current window name.
<@newname> - New window name.
[topic] - Window topic/title.

*Example*

<pre>
;Open a window.
/window -e @test1

;Rename @test1 to @test and add topic "Hello world".
/renwin @test1 @test2 Hello World
</pre>