The User Defined tab contains a UDEF form (CMForm.pbl) that allows you to customize by right-clicking and choosing Customize Form.
The following user defined columns in the Building Master table are available and editable:
| 
 Column Label  | 
 Building Master Table Column  | 
| 
 User Defined 1 Alpha 1  | 
 UDEF_1A_1  | 
| 
 User Defined 1 Alpha 2  | 
 UDEF_1A_2  | 
| 
 User Defined 2 Alpha 1  | 
 UDEF_2A_1  | 
| 
 User Defined 2 Alpha 2  | 
 UDEF_2A_2  | 
| 
 User Defined 3 Alpha 1  | 
 UDEF_3A_1  | 
| 
 User Defined 3 Alpha 2  | 
 UDEF_3A_2  | 
| 
 User Defined 5 Alpha 1  | 
 UDEF_5A_1  | 
| 
 User Defined 5 Alpha 2  | 
 UDEF_5A_2  | 
| 
 User Defined 5_2 Numeric 1  | 
 UDEF_5_2_1  | 
| 
 User Defined 7_2 Numeric 1  | 
 UDEF_7_2_1  | 
| 
 User Defined ID 1  | 
 UDEF_ID_1  |