(j3.2006) Coroutines again

[Van Snyder]

Shortly after sending Coroutines-TR-3 to the Tutorials folder, I noticed
a mistake in the second example using reverse communication.  This
illustrates the difficulty of implementing reverse communication
correctly without the benefit of coroutine syntax.  If you have
downloaded it and your copy is different from

-rw-r--r-- 1 member member 294460 Apr 22 22:03 Coroutines-TR-3.pdf

get the newer copy.