SCORS was initially provided by Stromberg-Carlson in 1961 as a set of basic subroutines interfaced to the IBM 704 assembler language. This was soon replaced by a version interfaced to Fortran for outputting SC4020 commands to magnetic tape providing a template for the first identification frame, handling the buffering of SC4020 commands into magnetic tape blocks, flushing any remaining commands in the buffer and adding an endfile block.
On top of these basic routines were a set of subroutines to make life easier for the user outputting text and graphics. These were often provided by users via a UAIDE Library. North American Aviation was a major contributor in the area of text and graph drawing. Stromberg-Carlson added many of these routines to their basic SCORS support.
For the movie makers, the basic SCORS routines were ported to their local computer system which often required a reasonable amount of work due to differences in computer word length and efficient buffering to magnetic tape. On top of this, the line drawing, character plotting and larger software text characters were the main interest.
The SC4020 Programmers' Reference Manual for 1964 gives a good description of the routines available at that time. Another good description is available in Don Deily's 1968 PhD Dissertation, PRINCIPLES FOR PRODUCING COMPUTER ANIMATED MOTION PICTURES, Section 5.3.1, from 1968.