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[no subject]

    Date: 13 OCT 1980 1520-EDT
    From: BAK at MIT-AI (William A. Kornfeld)
    To: (BUG ZWEI) at MIT-AI
    Commands such as LowerCaseWord or ChangeFontWord should check for the existence of
    a region and apply to the region if it exists.

I am not at all convinced that this is a good idea.  There exist
commands for hacking the region.  Making commands of this sort (that you
type so often that they are on single characters) do things
conditionally can make them harder to use.  Sometimes the region exists
by accident and you really don't want it.  As I understand it, the only
commands that are conditional in this way (use the region if it exists,
otherwise use ...) are things you don't call so often, like Compile
Defun (which is going to be partially obsoleted soon by the new
do-the-right-thing commands anyway).