Extending : Data type extension : Data type extension for Tooling : How to create a new data type : The Extension Point to create a new data type
  
The Extension Point to create a new data type
UNICOM® Digital Transformation Toolkit (UDTT™) provides an extension point, com.ibm.btt.tools.common.properties, to support Data Type extension for tooling.
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Below picture shows more detail about the extension point:
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See also
How to create a new data type