Quote quad letters
ACM SIGAPL APL Quote Quad · 1996
Here's a sampling from the Editors' mailbag:Roy's comment about "IBM's introduction of APVs..." in the "early 1980's" is way too late. APVs were first introduced, to my knowledge, in APL/4004 (Siemens APL) by Eric Iverson and others in early 1973. See Eric's article in the APL73 Proceedings.