Create an AnnotatedDataFrame-like data structure?
It could be nice to hold metadata information on labels, such as R/Bioconductor's AnnotatedDataFrame (http://rss.acs.unt.edu/Rdoc/library/Biobase/html/class.AnnotatedDataFrame.html) does by allowing, e.g., for description of the meaning/interpretation of a column name.

Have there been any thoughts on creating a data structure in pandas that can hold such metadata?

Thanks.
