+If the @code{WEIGHT} subcommand specified an adjustment weight
+variable, then the following summary functions use its value instead
+of the dictionary weight variable. Otherwise, they are equivalent to
+the summary function without the @samp{E}-prefix:
+
+@itemize @bullet
+@item @code{ECOUNT}
+@item @code{ETOTALN}
+@item @code{EVALIDN}
+@end itemize
+
+The following summary functions with a @samp{U}-prefix are equivalent
+to those without a prefix, except that they use unweighted counts:
+
+@itemize @bullet
+@item @code{UCOUNT}
+@item @code{U}@i{area}@code{PCT} or @code{U}@i{area}@code{PCT.COUNT}
+@item @code{U}@i{area}@code{PCT.VALIDN}
+@item @code{U}@i{area}@code{PCT.TOTALN}
+@item @code{UMEAN}
+@item @code{UMEDIAN}
+@item @code{UMISSING}
+@item @code{UMODE}
+@item @code{U}@i{area}@code{PCT.SUM}
+@item @code{UPTILE} @i{n}
+@item @code{USEMEAN}
+@item @code{USTDDEV}
+@item @code{USUM}
+@item @code{UTOTALN}
+@item @code{UVALIDN}
+@item @code{UVARIANCE}
+@end itemize