+**E4b** designates a specific classification or subgroup within a broader system, often found in contexts requiring detailed differentiation. Its unique characteristics are defined by its position, setting it apart from other [Variant](/wiki/variant) forms or a primary [Category](/wiki/category).
+## See also
+- [Classification](/wiki/classification)
+- [Type](/wiki/type)
+- [Subgroup](/wiki/subgroup)
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