changed 'This is bad class design, but save some typing'
into 'This is bad class design, but saves some typing'.
The classes in this module favor the server type that is simplest to
write: a synchronous TCP/IP server. This is bad class design, but
-save some typing. (There's also the issue that a deep class hierarchy
+saves some typing. (There's also the issue that a deep class hierarchy
slows down method lookups.)
There are five classes in an inheritance diagram, four of which represent