This session is for those who are already familiar with the arcpy.mp module in ArcGIS Pro and are interested in learning more advanced capabilities. We will focus the majority of our time discussing and demonstrating how to use Python to gain access to Esri's Cartographic Information Model (CIM). Python developers now have fine-grained access to the CIM and therefore to many more settings, properties, and capabilities that are persisted in a project or document. You will learn the necessary steps to read and understand the JSON structure of an object to successfully modify its CIM definition.