Key word grammars are defined to be the same as context free grammars, except that a production may specify a string of arbitrary symbols. These grammars define languages similar to those used in the programs CARPS and ...

This Memo. Describes a version of DDT used as the command level of the A.I. Group PDP-6 Time Sharing System (ITS). Special features include capability to handle multiple jobs, ability to stop open read or write references ...

This memo describes a method of automatically focusing the new vidisector (TVC). The same method can be used for distance measuring. Included are instructions describing the use of a special LISP and the required LISP-functions. ...

This memo originally had two parts. The first dealt with certain deficiencies in an early version of Guzman's program, SEE. The problems have been fixed, and the corresponding discussion has been dropped from this ...

This memo describes two small utility programs that are of assistance in using the ITS 1.4 (see A.I. 161, MAC-M-377) time sharing system. LOCK performs miscellaneous utility functions while PEEK displays, with periodic ...

The trouble with computer science today is an obsessive concern with form instead of content. This essay has three parts, suggesting form-content displacements in Theory of Computation in Programming languages and in Education.

This serves as a preliminary draft of Deluxe Picture Maintenance System, June, 1963. It is Technical Memorandum No. 1.

This is a mosaic description of PDP-6 LISP, intended for readers familiar with the LISP 1.5 Programmer's Manual or who have used LISP on some other computer. Some of the newer features (e.g. the display) are experimental ...

As a step in the direction of "computer vision," several programs have been written which transform the output of a vidisector into some mathematical descriptions of the boundaries enclosing the objects in the field of ...

A new version of the CTSS LISP is now available. The new system provides additional data storage and several new functions and constants. The I/O capabilities, EXCISE, the error comments, and several routines have ...