Manual: Describe the file contents preservation approach
Manual: Document the file_contents table
Manual: Use the correct legal notice with the proper copyright statement
Manual: Describe package sets
Manual: Minor formatting fix
Manual: Document the table package
Manual: Normalize some index terms
Manual: Short explanation of RPM versioning
Manual: Mention repositories associated with package sets
Manual: Document the tables package_set, package_set_member
Manual: Use custom preface
Manual: Include the symboldb manual page in the documentation