-the line we want it to spit out to the channel).
-
-(Footnote: 8sync's name for sending a message, "<-", comes from older,
-early lisp object oriented systems which were, as it turned out,
-inspired by the actor model!
-Eventually message passing was dropped in favor of something called
-"generic functions" or "generic methods"
-(you may observe we made use of such a thing in extending
-handle-line).
-Many lispers believe that there is no need for message passing
-with generic methods and some advanced functional techniques,
-but in a concurrent environment message passing becomes useful
-again, especially when the communicating objects / actors are not
-in the same address space.)