Structured Languages SIG Newsletter

This newsletter provides an update from the Structured Languages Special Interest Group (SIG) leadership as of April 1981, marking a transition in chairmanship from John R. Barr to Bill Carroll. The document includes:

• Historical Context: A retrospective on the origins of the Pascal SIG and its evolution into the broader Structured Languages SIG, detailing early efforts to port Pascal compilers to various DEC platforms like RSX-11.
• Technical Articles: A detailed multi-part tutorial by Hal Morris regarding I/O processing and interrupts in the C programming language on the PDP-11, including example source code and macro definitions.
• Language Initiatives: Reports and discussions on several languages including Pascal, C, FORTH, and Praxis (developed at Lawrence Livermore National Laboratory for control applications).
• Announcements: Information on upcoming symposia and seminars, such as the "Pascal as a Second Language" seminar, and a technical article detailing the implementation of a 'pipe' command for RT-11.