-pushing an \emph{update frame} onto the stack and overwriting the
-thunk with a \emph{black hole} (see Black Holes, below). When
-evaluation of the thunk completes, the update frame will cause the
-thunk to be overwritten again with an \emph{indirection} to the result
-of the thunk, which is always a constructor or a partial application.
+pushing an \emph{update frame} onto the stack. When evaluation of the
+thunk completes, the update frame will cause the thunk to be
+overwritten again with an \emph{indirection} to the result of the
+thunk, which is always a constructor or a partial application.