The structure of low-energy supersymmetric models of fundamental particles
and interactions is reviewed, with an emphasis on the minimal supersymmetric
extension of the Standard Model (MSSM) and some of its variants. Various
approaches to the supersymmetry-breaking mechanism are considered. The
implications for the phenomenology of Higgs bosons and supersymmetric particles
at future colliders are discussed.Comment: 20 pages, 2 figures, LaTeX with espcrc2.sty, invited talk at the "30
Years of Supersymmetry" Symposium, Minneapolis, Minnesota, 13--15 October
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