CFGCODE is a command-line utility used to create a packed property structure that can be unpacked using the HrCfgUnpackData function. It takes as input a text file containing a list of MAPI properties, and produces a file containing the binary packed property structure. The user can specify the name of the section in the input file to read from, and a configuration name to be placed at the front of the resulting packed (binary format) property structure.
See CFGCODE: Generating a Packed Property Structure.