@ PROGRAM NAME:    EXIT
@ DATE:            7-19-90
@ PURPOSE:         Calculate the breakaway point for complex roots from real
@                  axis, for Root Locus analysis.
@ ARGUMENTS:       Level 4: 'Algebraic expression in terms of "S"'(Capital S)
@                  Level 3: Left limit of real axis line segment
@                  Level 2: Right limit of real axis line segment
@                  Level 1: Desired accuracy (ex: .0001)