This looks like it might just be done for organization or structural purposes, or perhaps to save memory if A::B would be a huge module to load. It should be possible to just have a "Package A::B" at the top without having to specify ::C-F, I might be wrong though.

Check out this page, specifically the "Naming of modules" section.

In reply to Re^3: Understanding a OOP Code: Package declared within a Package by Phenomanan
in thread Understanding a OOP Code: Package declared within a Package by sachinz2

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