How to play sequences backwards?

Have no idea how to play sequences backwards, looked around on wiki’s and Google but nothing. Was wondering if anyone here knew how to.

I am 99.9% sure you can’t, but try using this:

with -1.

you can’t

Yeah that’s what I thought, thanks though robotboy and gonza

You can try using this made by Kogitsune.
http://forum.facepunch.com/showthread.php?t=1450243&p=47097895&viewfull=1#post47097895