Describe the new PRINT_ITEM_TO and PRINT_NEWLINE_TO opcodes.

Doc/lib/libdis.tex

@@ -277,8 +277,13 @@ expression statement is terminated with \code{POP_STACK}.
 \end{opcodedesc}
 
 \begin{opcodedesc}{PRINT_ITEM}{}
-Prints TOS.  There is one such instruction for
-each item in the \keyword{print} statement.
+Prints TOS to the file-like object bound to \code{sys.stdout}.  There
+is one such instruction for each item in the \keyword{print} statement.
+\end{opcodedesc}
+
+\begin{opcodedesc}{PRINT_ITEM_TO}{}
+Like \code{PRINT_ITEM}, but prints the item second from TOS to the
+file-like object at TOS.  This is used by the extended print statement.
 \end{opcodedesc}
 
 \begin{opcodedesc}{PRINT_NEWLINE}{}
@@ -287,6 +292,11 @@ last operation of a \keyword{print} statement, unless the statement
 ends with a comma.
 \end{opcodedesc}
 
+\begin{opcodedesc}{PRINT_NEWLINE_TO}{}
+Like \code{PRINT_NEWLINE}, but prints the new line on the file-like
+object on the TOS.  This is used by the extended print statement.
+\end{opcodedesc}
+
 \begin{opcodedesc}{BREAK_LOOP}{}
 Terminates a loop due to a \keyword{break} statement.
 \end{opcodedesc}