PDP-11 IAS user's guide : order no. DEC-11-OIUGA-C-D
Digital Equipment Corporation
The PDP-11 IAS User's Guide (DEC-11-OIUGA-C-D) was intended for the user of the Program Development System (PDS) Command Language with the IAS (Interactive Applications System) for PDP-11 computers. The IAS supported concurrent execution of three processing modes available through commands issued at the user's terminal: interactive, batch, and real-time.