- To set the region around the next balanced expression in the buffer,
-use @kbd{C-M-@key{SPC}} (@code{mark-sexp}), which sets mark at the
-same place that @kbd{C-M-f} would move to. @kbd{C-M-@key{SPC}} treats
+ To operate on balanced expressions with an operation which acts on
+the region, use the command @kbd{C-M-@key{SPC}} (@code{mark-sexp}).
+This sets the mark at the same place that @kbd{C-M-f} would move to.
+@xref{Marking Objects}, for more information about this command.
+
+@kbd{C-M-@key{SPC}} treats