A subset of PLANNER
, implemented in Lisp
by Gerald Sussman
et al at MIT
. Its important features were goal-oriented, pattern-directed procedure invocation, an embedded knowledge base, and automatic backtracking
microPLANNER was superseded by Conniver
["microPLANNER Reference Manual", G.J. Sussman et al, AI Memo 203, MIT AI Lab, 1970].