More details on 'pattern'
MODIFY
versions/3.0.md
versions/3.0.md
@@ -2617,7 +2617,7 @@ The following properties are taken directly from the JSON Schema definition and
- exclusiveMinimum
- maxLength
- minLength
-- pattern
+- pattern (This string SHOULD be a valid regular expression, according to the ECMA 262 regular expression dialect)
- maxItems
- minItems
- uniqueItems

More details on 'pattern'