I just discovered something pretty cool about the forum software. I just finished posting a question about mind mapping software and due to its excessive length I decided to delete some of it. Well, I accidentally deleted a huge portion that I did not want to delete, in a panic not wanting to retype most of the message I tried the Logos 4 technique on Windows of hitting Ctrl + Z and it undone my mistake.
Sorry if this is common knowledge but it was a Wow factor for me. 