| In this section  | Description  | 
| Finding the right interface to access non-creatable classes can be a challenge. Learn what a non-creatable object is and how to access it.  | |
| Learn how to declare and instantiate new variables from topics in the Help system.  | |
| Learn why some interface members in the TOC appear to be duplicated and others are not. See how OLEView can be used to verify what is accurate in the TOC.  | |
| Casting is central to traversing over 30,000 ArcObjects and creating robust applications. Learn when you can cast across interfaces from topics in the ArcObjects namespace reference.  | 
| Development licensing | Deployment licensing | 
|---|---|
| ArcGIS Desktop Basic | ArcGIS Desktop Basic | 
| ArcGIS Desktop Basic | ArcGIS Desktop Standard | 
| ArcGIS Desktop Standard | ArcGIS Desktop Advanced | 
| ArcGIS Desktop Advanced | Engine | 
