[NaviKhota]

Thank you for the answer.
However, all you wrote had always been clear to me.
My question is:
You say: "On Hold puts the project on ice indefinitely. To bring it back to life, just set the project status back to Active"

Now imagine that I've been doing a project and I want to postpone it indefinitely. According to David Allen it's the same as to place the project to "Someday/Maybe" list.
So, I've got 2 identical ways to do it: 1) Put the project on hold; 2) Move it to "Someday/maybe" folder.
Then either status "On hold" or Folder "Someday/Maybe" doesn't make any sense cause it copies one another.
Is that correct?

Sorry I'm raising lots of questions, I just want to grasp the way the system is ought to be used.