When Bell Telephone Laboratories (BTL) joined with MIT Project MAC and
General Electric's computer department to create the Multics project,
BTL contributed some of the finest programmers in the world to the
team. I first met Ken Thompson because he had written a slick editor
for CTSS called QED. It was descended from QED on the SDS-940, but was
quite different because Ken had added regular expressions to it, and
made many other changes. (Ken had published a paper on compiling
regular expressions into machine code just before joining the Multics
project.)  Ken worked on the Multics I/O switch design. Dennis Ritchie
and Rudd Canaday were BCPL jocks. Joe Ossanna worked on the I/O system
design and wrote one of the original six Multics papers; Bob Morris,
Doug McIlroy, Dave Farber, and Jim Gimpel worked on EPL, Stu Feldman
worked on the I/O switch, Peter Neumann managed the team and worked on
file system design, Brian Kernighan worked on the support tools.