Report Number: CS-TR-75-523
Institution: Stanford University, Department of Computer Science
Title: BAIL: a debugger for SAIL.
Author: Reiser, John F.
Date: October 1975
Abstract: BAIL is a debugging aid for SAIL programs, where SAIL is an extended dialect of ALGOL60 which runs on the PDP-10 computer. BAIL consists of a breakpoint package and an expression interpreter which allow the user to stop his program at selected points, examine and change the values of variables, and evaluate general SAIL expressions. In addition, BAIL can display text from the source file corresponding to the current location in the program. In may respects BAIL is like DDT or RAID, except that BAIL is oriented towards SAIL and knows about SAIL data types, primitive operations, and procedure implementation.
http://i.stanford.edu/pub/cstr/reports/cs/tr/75/523/CS-TR-75-523.pdf