Please explain the what points the examples explain.i am not able to understand the following statements.
R2001 A DESCRIPTION MUST only use the WSDL "import" statement to import another WSDL description.
R2803 In a DESCRIPTION, the namespace attribute of the wsdl:import MUST NOT be a relative URI.
R2002 To import XML Schema Definitions, a DESCRIPTION MUST use the XML Schema "import" statement.
R2003 A DESCRIPTION MUST use the XML Schema "import" statement only within the xsd:schema element of the types section.
R2004 In a DESCRIPTION the schemaLocation attribute of an xsd:import element MUST NOT resolve to any document whose root element is not "schema" from the namespace "http://www.w3.org/2001/XMLSchema".
the following examples are given to explain the above rules.please explain me the below examples and they are related to which above rules.