Patrick Greussay ca 1973. A Lisp dialect with a fast interpreter and a portable virtual machine. Introduced the "chronology", a dynamic environment for implementing interrupts. Led to Le_Lisp. See also ObjVlisp. ["Contribution a la Definition Interpretive et a l' Implementation des Lambda-Langages", P. Greussay, These d' Etat, U Paris VI, Nov 1977].