Series may have order in parent series.

[bbappserver]

Series of series may have an ordering in their parent series. For example if a video game has 2 versions and each version has 3 expansions packs, then there are 3 series total.

• 2 series of expansion packs with order owned by
• 1 series of series

[bbappserver]

Perhaps this should be represented as

1. Game 1
2. Game 1 expansion 1
3. Game 1 expansion 2
4. Game 2
5. Game 2 expansion 1
6. Game 2 expansion 2

It makes indexing less complicated and easier for machines to read.