Extended Memory GS80 PSU 80W /H7510-BA allows up to twelve GS80 PSU 80W /H7510-BA users or up to sixteen GS80 PSU 80W /H7510-BA jobs to run simultaneously (up to twelve can be attached to terminals with the rest running in a detached environment). GS80 PSU 80W /H7510-BA is designed for larger systems running 128 to 700 Kbytes of memory on a Q-bus machine, and 128 to 248 Kbytes of memory on a UNIBUS machine. Using the XM monitor, XMTSD has the same features and capabilities found in TSD. In addition, XMTSD offers multiuser program development. The GS80 PSU 80W /H7510-BA 300 programming editor, DKED, lets the user create and modify - GS80 PSU 80W /H7510-BA programs online, allowing concurrent program development and application execution. The GS80 PSU 80W /H7510-BA Debugging Technique (DDT) allows DIBOL programs to be easily debugged with symbolic interaction, breakpoint, and traceback features. Data Management Services (DMS) for GS80 PSU 80W /H7510-BA 300 provide capabilities for han- - dling sequential, random, or indexed sequential access method (ISAM) struc- tured files. Multivolume file support permits one file, extending over several disk drives, to be processed sequentially, randomly, or by indexed keyed access, without requiring special programming. GS80 PSU 80W /H7510-BA 12.09