edits

book.tex

@@ -1846,8 +1846,9 @@ instruction sequence back to front.
 where $W(k)$ are the variables written to by instruction $I_k$ and
 $R(k)$ are the variables read by instruction $I_k$.
 Figure~\ref{fig:live-eg} shows the results of live variables analysis
-for the running example. Next to each instruction we have written 
-a comment with its $L_{\mathtt{after}}$ set.
+for the running example, with each instruction aligned with its
+$L_{\mathtt{after}}$ set to make the figure easy to read.
+
 
 \begin{figure}[tbp]
 \hspace{20pt}