It took me a while to realize that the special "CDF" format is
just a simple CSV file. I thought this was perhaps some special
network logging format I had never heard of, or some standard
statistical analysis data storage format. After grepping through
all the source code I found a single comment in the CHANGELOG
that cleared up the mystery. You might want to document this in
the README and as a comment in the default config file.
Comma Separated Value, or CSV, is the term used by civilized people
throughout the world; and was ratified as a footnote in
the Fourth Geneva Convention to proscribe the use of silly three
letter acronyms which cause undue confusion and suffering.