1 files changed, 13 insertions, 4 deletions
diff --git a/thesis/abbr.tex b/thesis/abbr.tex
index 6124917..0c172ef 100644
--- a/thesis/abbr.tex
+++ b/thesis/abbr.tex
@@ -1,11 +1,20 @@
 \section{Abbreviations}
 \label{sec:abbreviations}
 
-\begin{multicols}{2}
-
 \begin{description}
+	\item[HNF]
+		Head normal form, the state of a graph node that cannot be rewritten itself (though it children may).
+	\item[ISA]
+		Instruction set architecture.
+	\item[LSB(s)]
+		Least significant bit(s), the bit(s) with the lowest value in a word.
 	\item[PC]
 		Program counter.
+	\item[RTS]
+		Run-time system.
+		Clean's run-time system ensures that the \clean{Start} node is reduced and printed.
+		It also takes care of garbage collecting.
+	\item[UAL]
+		Unified Assembly Language.
+		%todo
 \end{description}
-
-\end{multicols}