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  (known exceptions are discarded in the code).  Note that the listed
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  (known exceptions are discarded in the code).  Note that the listed
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  methods may not be user-visible objects, but often help will be
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  methods may not be user-visible objects, but often help will be
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  available for them.
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  available for them.
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  If \code{class} is used, we check that a matching generic can be found
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  If \code{class} is used, we check that a matching generic can be found
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  for each user-visible object named.
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  for each user-visible object named.  If \code{generic.function} is
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  given, there is a warning if it appears not to be a generic function.
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  (The check for being generic used can be fooled.)
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}
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}
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\note{
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\note{
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  This scheme is called \emph{S3} (S version 3).  For new projects,
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  This scheme is called \emph{S3} (S version 3).  For new projects,
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  it is recommended to use the more flexible and robust \emph{S4} scheme
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  it is recommended to use the more flexible and robust \emph{S4} scheme
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  provided in the \pkg{methods} package.  Functions can have both S3
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  provided in the \pkg{methods} package.  Functions can have both S3
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  eds J. M. Chambers and T. J. Hastie, Wadsworth \& Brooks/Cole.
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  eds J. M. Chambers and T. J. Hastie, Wadsworth \& Brooks/Cole.
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}
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}
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\examples{
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\examples{
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methods(summary)
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methods(summary)
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methods(class = "aov")
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methods(class = "aov")
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methods("[[")    ##- does not list the C-internal ones...
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methods("[[")    # uses C-internal dispatching
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methods("$")     # currently none
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methods("$")
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methods("$<-")   # replacement function
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methods("$<-")   # replacement function
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methods("+")     # binary operator
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methods("+")     # binary operator
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methods("Math")  # group generic
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methods("Math")  # group generic
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methods("axis")  # looks like it has methods, but not generic
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\dontrun{methods(print)
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\dontrun{methods(print)   # over 100
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}}
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}}
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\keyword{methods}
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\keyword{methods}