git » jacl.git » commit e102442

diff --git a/paper/jacl-els-2020.tex b/paper/jacl-els-2020.tex
index 1ab0c26..36e05f8 100644
--- a/paper/jacl-els-2020.tex
+++ b/paper/jacl-els-2020.tex
@@ -506,23 +506,23 @@ optimizers that may be applied to deliverable executables.
 The compiler has one analysis pass that results in an AST. The AST is
 then converted to JavaScript strings by a code generation step.
 
-Each AST node is a JavaScript object with at least the following
-keys:
+AST nodes are represented by generic JavaScript objects with at least
+the following keys:
 
 \begin{itemize}
-  \item \texttt{op}: The node name, a JavaScript string.
-  \item \texttt{env}: An \texttt{Env} JavaScript object that
-    represents the node's lexical environment.
+  \item \texttt{op}: The node's name, as a JavaScript string.
+  \item \texttt{env}: An object of class \texttt{Env} that represents
+    the node's lexical environment.
   \item \texttt{parent}: The node's parent; this is \texttt{null} for the root.
   \item \texttt{form}: The node's original source data, a Lisp datum.
 \end{itemize}
 
-\texttt{node} and \texttt{Env} objects are immutable by
-convention. Functions are provided for modifying and merging these
-objects so as only to produce new objects. This convention reduces the
-possibility of optimization passes interfering with one another. It
-also eases understanding the AST, since every AST node contains a copy
-of all relevant context.
+Nodes and \texttt{Env} objects are immutable by convention. Functions
+are provided for modifying and merging these objects so as only to
+produce new objects. This convention reduces the possibility of
+optimization passes interfering with one another. It also eases
+understanding the AST, since every AST node contains a copy of all
+relevant context.
 
 As JavaScript objects, AST nodes are easily introspected using the Web
 browser's object inspector.