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Automatically merged updates to draft EIP(s) 998 

Hi, I'm a bot! This change was automatically merged because:

 - It only modifies existing Draft or Last Call EIP(s)
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Nick Mudge 2018-08-20 14:09:38 -07:00 committed by EIP Automerge Bot
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EIPS/eip-998.md
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@ -37,6 +37,13 @@ With composable tokens it is possible to compose lists or trees of ERC721 and ER
Different composables, top-down and bottom-up, have their advantages and disadvantages which are explained in the [Rational section](#rationale). It is possible for a token to be one or more kinds of composable token.
A non-fungible token is ERC998 compliant and is an ERC998 Composable if it implements one or more of the following interfaces:
* ERC998ERC721TopDown
* ERC998ERC20TopDown
* ERC998ERC721BottomUp
* ERC998ERC20BottomUp
## Specification
### ERC721
@ -1307,6 +1314,8 @@ Here is an example of what could occur if **from** was not explicitly provided i
### Additional Reading Material
[Top-Down and Bottom-Up Composables, What's the Difference and Which One Should You Use?](https://hackernoon.com/top-down-and-bottom-up-composables-whats-the-difference-and-which-one-should-you-use-db939f6acf1d)
Join the discussion about composables in the [NFTy Magician's Discord](https://discord.gg/8cuuj2Y).
## Backwards Compatibility
Composables are designed to work with ERC721, ERC223 and ERC20 tokens.