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This is demonstration of Nonlin running 
in Poplog First, going to change the 

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directory where Nonlin is located, 
and then load the source file. 

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We're offered the choice of loading a 
critical path calculation package which 

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we're going to do. There's some errors in 
it in certain versions of Poplog, we can 

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just ignore that. And then, we look at 
the main menu which is called TF Info. 

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We'll load a new TF file, 
in this case, it's going to be block 

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zero, block zero. 
Which is a demonstration of the Sussman, 

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and normally block second problem. 
And now, we'll give the goal schemer, 

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which is to plan for the goal on AB and 
the goal on BC. 

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So, we're going to make a stack of 
blocks. 

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And that's the plan already created. 
There's some diagnostics that are showing 

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while the expansion was taking place. 
So, we're going to look at the results 

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network. 
We'll go through all of the different 

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options here. 
So we're looking at the main results 

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network, 
it's got a few dummy nodes and so on in 

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there and we can get a cleaner version 
just with the actions only. 

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We're showing there the predecessors and 
successors of each, each node. 

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And then, we're going to look at the 
critical path data. 

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But in this case, the data is all zeroed 
out because there is no data in it. 

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Then, we're looking at the goal structure 
table and the table of multiple effects. 

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We'll look at any initial context in the 
plan and the, the, initial state for the 

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plan. 
And we can do a simulation of what the 

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state looks like at any point in the 
plan. 

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In this case, we'll just look at it at 
the end node. 

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So, this is the state at the end of the 
plan having been executed. 

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We'll load a new domain now. 
In this case, it's going to be a house 

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building task with some critical path 
method data in it, 

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some durations and times. 
So we'll set up a task for this one which 

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is just to build a house, to expand a 
top-level action of building the house. 

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And again, that's plan created so we'll 
just look at the results. 

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And again, we're going to through all the 
options. 

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We'll just see the main results network 
with all of the dummy nodes in, in place. 

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And we'll look at it just cleaned just 
with the actions. 

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And then, we'll going to look at it with 
the critical path method data which will 

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give us the durations, the early 
finishes, and the late finishes for each 

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node. 
And the start, the role starts means it's 

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on the critical path. 
And again, we're looking at the gold 

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structure table, 
and the table of multiple effects. 

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And again, the initial context there is 
none in this case. 

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And then, we'll look at the context of a 
particular node doing a node simulation. 

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In this case, again, we'll look at the 
state at the end of the plan.