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Update subset/superset docs (#8795) 

* Update subset/superset docs

* Update website/docs/usage/rule-based-matching.md

Co-authored-by: Adriane Boyd <adrianeboyd@gmail.com>

Co-authored-by: Adriane Boyd <adrianeboyd@gmail.com>
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Paul O'Leary McCann 2021-07-27 19:08:46 +09:00 committed by GitHub
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website/docs/usage/rule-based-matching.md
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@ -232,14 +232,20 @@ following rich comparison attributes are available:
>
> # Matches tokens of length >= 10
> pattern2 = [{"LENGTH": {">=": 10}}]
>
> # Match based on morph attributes
> pattern3 = [{"MORPH": {"IS_SUBSET": ["Number=Sing", "Gender=Neut"]}}]
> # "", "Number=Sing" and "Number=Sing|Gender=Neut" will match as subsets
> # "Number=Plur|Gender=Neut" will not match
> # "Number=Sing|Gender=Neut|Polite=Infm" will not match because it's a superset
> ```
| Attribute | Description |
| -------------------------- | ------------------------------------------------------------------------------------------------------- |
| `IN` | Attribute value is member of a list. ~~Any~~ |
| `NOT_IN` | Attribute value is _not_ member of a list. ~~Any~~ |
| `ISSUBSET` | Attribute values (for `MORPH`) are a subset of a list. ~~Any~~ |
| `ISSUPERSET` | Attribute values (for `MORPH`) are a superset of a list. ~~Any~~ |
| `IS_SUBSET` | Attribute values (for `MORPH`) are a subset of a list. ~~Any~~ |
| `IS_SUPERSET` | Attribute values (for `MORPH`) are a superset of a list. ~~Any~~ |
| `==`, `>=`, `<=`, `>`, `<` | Attribute value is equal, greater or equal, smaller or equal, greater or smaller. ~~Union[int, float]~~ |
#### Regular expressions {#regex new="2.1"}