TOPS-20 PASCAL

This manual provides a comprehensive reference for the PASCAL-20 programming language as implemented on the TOPS-20 operating system. It covers language structure, data types, expressions, program declaration, statements, subprograms, input and output procedures, and how to compile, load, and execute PASCAL programs. It also includes information on the PASCAL-20 debugger, PASDDT, as well as appendices on error messages, ASCII character set, syntax summary, ISO compliance, and differences compared to VAX-11 PASCAL.