I'm sure this would help others, maybe players who are new to Hardmode or like to experiment with their totems.
For example, if you had a totem they would like to use for Survivor, you would like to see if it works before you save it right? Otherwise you would have to go into a private room and test it then. No, this doesn't take much work, I just figured it would be easier with a 'Testing' option while editing your Totem. It would take you into a map that is fairly simple, map 0 for example, so you could test your totem there.
http://oi41.tinypic.com/2iw11t3.jpg
Also, there is no doubt in my mind that somebody has suggested this:
Being able to undo what you do while building your totem.
It is a pain in the butt when you accidentally make a mistake, and have to restart.
Ctrl+Z Would be nice.
I don't know how much clearer I could make this, being able to test your totem and undo-ing spawned items.
If you do not understand I am sorry.
And yes, this is definitely not needed, I just thought it would be a pretty enjoyable update.
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I'm sure this was suggested before, and not sure if this was denied or what. Please just lock this if there are any issues. Thank you.

Yeah I hate when mistake thing...

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