RRDdump
-------
* no more spaces in output
-* --no-header replaced with --header {xsd,dtd}
+* additional option: --header {none,xsd,dtd}
+
+RRDgraph
+--------
+* VDEF PERCENTNAN (PRECENT that ignores NAN)
+
+RRDflush
+--------
+* instruct the rrdcached to flush all its data