First, only for tau steps.

Secondly, this currently doesn't take care of argument steps very
well. Essentially, the problem is that a single location can start
working on an argument (because to it, it looks like the function is
done),
while the function is not finished computing at the choreography
level.

I think to fix this, we'll need to change the compiler and possibly
the target language again.

Alex Kavvos would argue that this is more correct.

Now, we just have "annotated choreographies" (though without numbers on if statements). This means we are not annotating choreographies any more.

Annotated choreographies, which have both (a) synchronization annotations and (b) line numbers identifying if statements.