Mac OS X Bundle Issues. A. Packages are simply folders with a specific internal structure and associated special files that are used to create what appears to be a single file in the Finder. Mac OS 9 and OS X have their own package formats that differ significantly from each other. You can read more on Mac OS 9 packages in this TIL article. For Mac OS X Bundles you should read this section of the Mac OS X Documentation.
Tape can create either format and the associated files.
Tape is designed to focus more on Mac OS X bundles since they are backwards compatible with Mac OS 9. A. Packages are intended for Application programs. Apple has also moved to an HTML-based Help System and you must include these text and graphic files with your software distribution as well. Files or folders that must be modified by the user directly such as templates or third-party plugins. You can include your own Shared Libraries or plugins.