[Feature Request] References/Pointer to Tasks

Sometimes a sub-task can be solved in different contexts therefor it would be nice to be able to add the same task to more than one parent tasks. Whatever happens to one of them should take effect to all the other references as well.

So if you add a description to one of them all other references should show it as well, when one gets closed all others are closed as well and so on ...

It would almost work as a copy of a task but they would still share the same data/status.

Would this be possible?