| Arc::CacheParameters | Contains data on the parameters of a cache |
| Arc::DataBuffer | Represents set of buffers |
| Arc::DataCallback | This class is used by DataHandle to report missing space on local filesystem |
| Arc::DataHandle | This class is a wrapper around the DataPoint class |
| Arc::DataMover | DataMover provides an interface to transfer data between two DataPoints |
| Arc::DataPoint | A DataPoint represents a data resource and is an abstraction of a URL |
| Arc::DataPointDirect | This is a kind of generalized file handle |
| Arc::DataPointIndex | Complements DataPoint with attributes common for Indexing Service URLs |
| Arc::DataPointLoader | Class used by DataHandle to load the required DMC |
| Arc::DataPointPluginArgument | Class representing the arguments passed to DMC plugins |
| Arc::DataSpeed | Keeps track of average and instantaneous transfer speed |
| Arc::DataStatus | Status code returned by many DataPoint methods |
| Arc::FileCache | FileCache provides an interface to all cache operations |
| Arc::FileCacheHash | FileCacheHash provides methods to make hashes from strings |
| Arc::FileInfo | FileInfo stores information about files (metadata) |
| Arc::URLMap |
1.6.3