[Haskell] How does "do" know when to stop?

[Rob Hoelz]

When I define a function and I use do to string functions together, how
does it know when my list of functions has come to an end?  For example:

foo = do
    bar
    baz
    other_func
bar = ...

How does it know to stop at other_func?

Thanks,
Rob Hoelz