A specialized element or relationship must inherit the properties of its general concept, including permitted relationships, and must preserve the underlying concept definition so existing analysis and visualization techniques still apply; it may add restrictions or allow relationships that the general concept does not. Specialization must be recorded by assigning a profile whose name is the specialization name, and the profile may define notation; the default is the UML guillemet stereotype, while icons, colors, fonts or symbols are alternatives and any new symbol should preferably echo the general concept's notation. Multiple specialization profiles may apply to one general concept and are listed with commas between them in the default notation.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.