SAP UNICODE CLUSTER documentation, setup help and example usage

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Storing Data Clusters in Database Tables
Data clusters are not converted when they are migrated from a non-Unicode database to a Unicode system .
For this reason, there may be ABAP cluster tables in a Unicode system that contain non-Unicode characters. These characters are automatically converted during each import.
When the data is exported, any Unicode characters that may be contained in the data objects are stored in a platform-specific format in the Unicode system.