Summary of the "doctypes_" fields in ListManager
The doctypes_ table is a lookup table for the allowed document types in the docs_ table. Every DocType_ in the docs_ table should have an entry in the doctypes_ table.
Primary key: DocType_
| 
                     Field Name  | 
                
                     Description  | 
                
                     Version Added  | 
            
| 
                     Desc_  | 
                
                     Textual description of this document type (varchar(100), NOT NULL)  | 
                
                     
  | 
            
| 
                     DocType_  | 
                
                     Unique ID identifying this document type (varchar(20), NOT NULL)  | 
                
                     
  | 
            
Document Types supported by ListManager
| 
                     DocType_  | 
                
                     Description  | 
            
| 
                     BILLING  | 
                
                     Billing invoice data.  | 
            
| 
                     CONTENT  | 
                
                     Content created to be sent to a list.  | 
            
| 
                     MESSAGE  | 
                
                     An internal message sometimes sent to a user or an administrator.  |