The simpleType element defines a simple type and specifies the constraints and information about the values of attributes or text-only elements.
(The ? sign declares that the element can occur zero or one time inside the simpleType element)
|id||Optional. Specifies a unique ID for the element|
|name||Specifies a name for the element. This attribute is required if the simpleType element is a child of the schema element, otherwise it is not allowed|
|any attributes||Optional. Specifies any other attributes with non-schema namespace|
This example defines an element called "age" that is a simple type with a restriction. The value of age can NOT be lower than 0 or greater than 100:
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