-# "make clean_list" to remove all intermediatary files but preserve any binaries\r
-# and "make doxygen" to document the project with DoxyGen (if installed).\r
+# "make clean_list" to remove all intermediatary files but preserve any binaries,\r
+# "make doxygen" to document the library/demos/etc. with DoxyGen (if installed) and\r
+# "make clean_doxygen" to remove generated Doxygen documentation.\r