Build and installation "preferences" for specific hardware architectures, software environments, organizational levels (e.g., company, network, node, user) and types (e.g., debug, production).
Configuration status (e.g., file modification and package installation dates) for a given machine, network, etc.
Detailed explanations of error messages.
Relationship information (possibly annotated) connecting other data elements.
Contact and descriptive information for organizations (e.g., companies, projects) and individuals (e.g., authors, maintainers).
General information about packages (e.g., history, purpose, limitations).
Descriptions of programs (e.g., file access, purpose).
Specific information on package versions (e.g., access information, release date, ID).