| AData | Describe a chunk of data (used in ftp.c) |
| ADate | Date structure |
| AInterface | Describe the interface of a program. Only really relevant for libraries |
| APackage | Describe a specific package (ie, an RPM for an update) |
| AProgInfo | Describe an installed (and registered) program |
| AQuantifier | |
| AUpdate | Describe all aspects of any type of update (software, message, etc.) |
| GContainer | Generic wrapper around glib Pointer Array and Doubly/Singly Linked List objects |
| GIterator | An Iterator over a GContainer object |
| LUAU_parsedLine | A line of input sorted into its identifier and its arguments |
| MD5Context | |
