[schakwin]

Here's one way that I would love to implement cloning. I sometimes have a general context in which a header with a number of subheads might appear - for example a specific punch list for a type of project or subproject. When I set up instances of that (let's say things to pack for a business trip) I would simply have that headline with its subs in each trip that I'm planning. If, when I am going down it, I remember something else that should come with me at all times, I can change it in one place in the outline and have the changes appear in each trip's agenda.
Same thing if I'm using OO to run projects in my work or in my personal life. A lot of what i do is iterations of a general plan and I get learning from the feedback that ought to affect the general and all of its other iterations.

Best,

Stephen