+rESERVED_STACK_WORDS = (RESERVED_STACK_WORDS :: Int)
+\end{code}
+
+Size of a word, in bytes
+
+\begin{code}
+wORD_SIZE = (SIZEOF_HSWORD :: Int)
+wORD_SIZE_IN_BITS = wORD_SIZE * 8 :: Int
+\end{code}
+
+Size of a storage manager block (in bytes).
+
+\begin{code}
+bLOCK_SIZE = (BLOCK_SIZE :: Int)
+bLOCK_SIZE_W = (bLOCK_SIZE `div` wORD_SIZE :: Int)
+\end{code}
+
+Number of bits to shift a bitfield left by in an info table.
+
+\begin{code}
+bITMAP_BITS_SHIFT = (BITMAP_BITS_SHIFT :: Int)