Sequential tasks

[$bill]

If I understand you correctly, I handle sequential tasks now using nested saved searching.

I set up my project like this.

Sequential Project
+do this third
++do this second
+++do this first


Nested saved search like this

Search for Sequential Project next task
+Search for tasks

where
"Search for Sequential Project tasks" is >>Item is task and Item is not an ancestor of "Search for tasks"
"Search for next task" is >> Item is a task

So when I execute the saved search "Sequential Project next task", it only returns the Item "do this first".

Sorry for the simple example but perhaps it will give you something to start with.... I believe an example of this is in the UR Sample database GTD.urd.