| _PmBatch | A list of packages |
| _PmBucket | A bucket in a hash table |
| _PmDatabase | A package database |
| _PmDatabaseOps | Database operations structure |
| _PmDependency | A dependency |
| _PmDownloadUrl | A download URL |
| _PmEdge | An edge in a graph |
| _PmFile | A representation of a file on the filesystem |
| _PmHashTable | A hash table |
| _PmMatches | Search matches |
| _PmModule | A package or database module |
| _PmPackage | A representation of a package |
| _PmPackageOps | Package operations structure |
| _PmVertice | A vertice in a graph |
| PmGraph | A graph, containing vertices and edges |
| PmTransaction | A transaction |
| PmTransactionError | A transaction error |
1.2.15-20020430