check

book.tex

@@ -11842,7 +11842,7 @@ block40:
 
 As discussed earlier in this chapter, the garbage collector needs to
 access all the pointers in the root set, that is, all variables that
-are tuple. It will be the responsibility of the register allocator
+are tuples. It will be the responsibility of the register allocator
 to make sure that:
 \begin{enumerate}
 \item the root stack is used for spilling tuple-typed variables, and
@@ -11884,7 +11884,7 @@ changes to also record the number of spills to the root stack.
 
 
 
-\section{Generate Prelude and Conclusion}
+\section{Prelude and Conclusion}
 \label{sec:print-x86-gc}
 \label{sec:prelude-conclusion-x86-gc}
 \index{subject}{prelude}\index{subject}{conclusion}