  We review the present status of Higgs physics within the standard model and
its extensions. First, we briefly summarize the current experimental exclusion
limits from the direct searches with LEP1 and the Tevatron, and assess the
discovery potential of LEP2. Then, we report the mass bounds resulting from
global fits to the latest electroweak precision data, and compile various
theoretical principles which lead to restrictions - or even determinations - of
the Higgs-boson masses. Perturbative upper bounds are discussed in some detail.
Finally, we survey the recent progress in the computation of higher-order
radiative corrections to the bb-bar decay width of the standard-model Higgs
boson.
