-configure can be set with the usual shell syntax `VAR=value
-./configure' (assuming sh syntax), but can also be specified as
-arguments to configure, as shown above. The latter method, while
-being specific to configure, works unmodified in all shells.
+configure can be set with the usual shell syntax `VAR=value ./configure'
+(assuming sh syntax), but can also be specified as arguments to
+configure, as shown above. The latter method, while being specific to
+configure, works unmodified in all shells, and in addition allows
+configure to detect when that setting has been changed across
+invocations.