with all lowercase letters, and every time dmake is invoked
to bring files up to date, it will try to recompile such files again.
For example, Tk distribution has a lot of such files, resulting in
-needless recompiles everytime dmake is invoked. To avoid this, you
+needless recompiles every time dmake is invoked. To avoid this, you
may use the script "sync_ext.pl" after a successful build. It is
available in the win32 subdirectory of the Perl source distribution.