diff --git a/book/programs/chapter.tex b/book/programs/chapter.tex
index 254f3d5..b460730 100644
--- a/book/programs/chapter.tex
+++ b/book/programs/chapter.tex
@@ -9,6 +9,9 @@ that demonstrate their usefulness.
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \section{Use {\tt ebreak} to Stop \rvddt{} Execution}
 \index{Instruction!ebreak}
+\label{insn:ebreak}
+
+It is a good idea to learn how to stop before learning how to go!
 
 The \insn{ebreak} instruction exists for the sole purpose of transferring control back 
 to a debugging environment.\cite[p.~24]{rvismv1v22:2017}
@@ -39,6 +42,7 @@ I needed for myself \tt:-)}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \section{Using the \insn{addi} Instruction}
 \index{Instruction!addi}
+\label{insn:addi}
 
 \enote{Define what constant and immediate values are somewhere.}%
 The detailed description of how the \insn{addi} instruction is executed