RSX-11 was the "Assembly Language"/"Machine Language" development environment on the old DEC PDP series of minicomputers. You'd write your code, run it through the assembler,/linker, then run the results. If you screwed something up, you got pointed to a file containing the "core dump" (basically, grab everything in your assigned hunk of memory and turn it into a long string of hexadecimal (or, optionally, octal) numbers so you can start going through it byte-by-byte to figure out what you got wrong) You'd then feed that file to the line-printer, and after collecting the hard-copy, you'd go find a quiet place to alternate between searching for the problem, and crying because you can't find it
No snakes here, thanks...
HYE eaten a live bug?