-built files. If there's a Makefile and it contains a "install" target,
-then this is done by running make (or MAKE, if the environment variable is
-set). If there is a setup.py or Build.PL, it is used.
+built files. It does so by running the appropriate command for the build
+system it detects the package uses. For example, if there's a Makefile and
+it contains a "install" target, then this is done by running make (or MAKE,
+if the environment variable is set). If there is a setup.py or Build.PL,
+it is used.