diff --git a/parser/tree-tostring.go b/parser/tree-tostring.go
index d469ed3..a26c6c9 100644
--- a/parser/tree-tostring.go
+++ b/parser/tree-tostring.go
@@ -56,6 +56,11 @@ func (tree *SyntaxTree) ToString (indent int) (output string) {
 		output += tree.objtSections[name].ToString(indent)
 	}
 
+	enumSectionKeys := sortMapKeysAlphabetically(tree.enumSections)
+	for _, name := range enumSectionKeys {
+		output += tree.enumSections[name].ToString(indent)
+	}
+
 	dataSectionKeys := sortMapKeysAlphabetically(tree.dataSections)
 	for _, name := range dataSectionKeys {
 		output += tree.dataSections[name].ToString(indent)
@@ -319,3 +324,32 @@ func (section *ObjtSection) ToString (indent int) (output string) {
 	return
 }
 
+func (section *EnumSection) ToString (indent int) (output string) {
+	output += doIndent (
+		indent,
+		"enum ",
+		section.permission.ToString(), " ",
+		section.name, ":",
+		section.what.ToString(), "\n")
+
+	for _, name := range sortMapKeysAlphabetically(section.members) {
+		output += doIndent(indent, name, " ")
+
+		member := section.members[name]
+	
+		isComplexInitialization :=
+			member.kind == ArgumentKindObjectInitializationValues ||
+			member.kind == ArgumentKindArrayInitializationValues
+		
+		if member.value == nil {
+			output += "\n"
+		} else if isComplexInitialization {
+			output += "\n"
+			output += member.ToString(indent + 1, true)
+		} else {
+			output += " " + member.ToString(0, false)
+			output += "\n"
+		}
+	}
+	return
+}
diff --git a/parser/tree.go b/parser/tree.go
index c1b5e74..f5cf332 100644
--- a/parser/tree.go
+++ b/parser/tree.go
@@ -13,6 +13,7 @@ type SyntaxTree struct {
 	requires     []string
 	typeSections map[string] *TypeSection
 	objtSections map[string] *ObjtSection
+	enumSections map[string] *EnumSection
 	dataSections map[string] *DataSection
 }
 
@@ -191,3 +192,13 @@ type ObjtSection struct {
 	permission   types.Permission
 	members      map[string] ObjtMember
 }
+
+// EnumSection represents an enumerated type section.
+type EnumSection struct {
+	location file.Location
+	name     string
+	
+	what       Type
+	permission types.Permission
+	members    map[string] Argument
+}