Douglas programming concepts, organization, and details employed in structural analysis are presented. Procedures for identifying, storing, and retrieving matrix data are discussed. The DEMON programming system for the IBM 7094, which includes the monitor and the language of present Redundant Force Analysis, is described.
Since this system can only be run on an IBM 709, 7090, or 7094, and cannot be easily run outside of Douglas, a new system called FORMAT is being developed. FORMAT is a matrix abstraction program written almost completely in FORTRAN IV language. It provides the ability to perform matrix operations on very large matrices which are stored on tape, and it contains provisions for the inclusion of user-coded FORTRAN IV subroutines.