SAP Function Module search on BM_NO
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BM_NODES_GET_COMMON_PARENT -
BM_NODES_GET_PARENTS -
BM_NODES_GET_REFS_AND_TEXTS -
BM_NODES_PUT - Write nodes
BM_NODE_GET_DIAGRAM_INFO -
BM_NODE_READ - Read hierarchy node
BM_NODE_TYPE_GET_REF_TYPE -
BM_NODE_TYPE_GET_TEXT_RTYPE -
Return Table index