diff --git a/book/elements/chapter.tex b/book/elements/chapter.tex
index a7883bc..39ab41e 100644
--- a/book/elements/chapter.tex
+++ b/book/elements/chapter.tex
@@ -1,6 +1,21 @@
 \chapter{The Elements of a Assembly Language Program}
 \label{chapter:elements}
 
+\section{Assembly Language Statements}
+
+Introduce the assembly language grammar. 
+Statement = 1 line of text containing an instruction or directive.
+
+Instruction = label, mnemonic, operands, comment.
+
+Directive = Used to control the operation of the assembler.
+
+\section{Memory Layout}
+
+Is this a good place to introduce the text, data, bss, heap and stack regions?
+
+Or does that belong in a new section/chapter that discusses addressing modes?
+
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \section{A Sample Program Source Listing}