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+COMPATIBLE_INTERFACE_NUMBER_MAX
+-------------------------------
+
+Properties whose maximum value from the link interface will be used.
+
+The ``COMPATIBLE_INTERFACE_NUMBER_MAX`` property may contain a list of
+properties for this target whose maximum value may be read at generate
+time when evaluated in the ``INTERFACE`` variant of the property in all
+linked dependees. For example, if a property ``FOO`` appears in the list,
+then for each dependee, the ``INTERFACE_FOO`` property content in all of
+its dependencies will be compared with each other and with the ``FOO``
+property in the depender. When reading the ``FOO`` property at generate
+time, the maximum value will be returned. If the property is not set,
+then it is ignored.
+
+Note that for each dependee, the set of properties specified in this
+property must not intersect with the set specified in any of the other
+:ref:`Compatible Interface Properties`.