or their values are used). The variables whose names end in
@samp{-function} have single functions as their values.
+A special feature allows you to specify expressions to evaluate if and
+when a file is loaded (@pxref{Hooks for Loading}). That feature is
+not exactly a hook, but does a similar job.
+
@c We need to xref to where each hook is documented or else document
@c it here.