Orca::SourceDataFile

	Requirements
		Manages one source data file
		Knows when the data file will be updated
		Only class to know the internal format of the file
		Can have brand new data fields at any point in time

	Internal Storage

	Methods

Orca::RRDFile

	Requirements
		Manages on RRD file
		RRD file can contain data resulting from arbitrary math
			expressions.

	Internal Storage

	Methods

Orca::GIFFile

	Requirements

	Internal Storage

	Methods
