newbie basic question about undo

[kapow]

Hello!


I have one of those questions that probably has the easieast answer but I can't figure it out.





I am following the online tutorial and made a mistake. How can I undo several steps? My undo icon is greyed out so I can't go back.





Thanks

 

[ridein]

You could always close your part without saving and then open up your saved version.