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 microPLANNER was superseded by Conniver.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]. (1995-01-10)