For constructs that do interpolate, variables beginning with "C<$>"
or "C<@>" are interpolated. Subscripted variables such as C<$a[3]> or
-C<$href->{key}[0]> are also interpolated, as are array and hash slices.
-But method calls such as C<$obj->meth> are not.
+C<< $href->{key}[0] >> are also interpolated, as are array and hash slices.
+But method calls such as C<< $obj->meth >> are not.
Interpolating an array or slice interpolates the elements in order,
separated by the value of C<$">, so is equivalent to interpolating