+#ifdef UNIFDEF_LEGACY_64_APIS
+.Sh TRANSITIONAL DESCRIPTION (NOW DEPRECATED)
+The
+.Fn getmntinfo64
+routine is equivalent to its corresponding non-64-suffixed routine,
+when 64-bit inodes are in effect.
+It was added before there was support for the symbol variants, and so is
+now deprecated.
+Instead of using it, set the
+.Dv _DARWIN_USE_64_BIT_INODE
+macro before including header files to force 64-bit inode support.
+.Pp
+The
+.Ft statfs64
+structure used by this deprecated routine is the same as the
+.Ft statfs
+structure when 64-bit inodes are in effect.
+#endif /* UNIFDEF_LEGACY_64_APIS */