diff --git a/Implab/Automaton/AutomatonTransition.cs b/Implab/Automaton/AutomatonTransition.cs
--- a/Implab/Automaton/AutomatonTransition.cs
+++ b/Implab/Automaton/AutomatonTransition.cs
@@ -1,7 +1,7 @@
 using System;
 
 namespace Implab.Automaton {
-    struct AutomatonTransition : IEquatable<AutomatonTransition> {
+    public struct AutomatonTransition : IEquatable<AutomatonTransition> {
         public readonly int s1;
         public readonly int s2;
         public readonly int edge;
diff --git a/Implab/Automaton/IDFATable.cs b/Implab/Automaton/IDFATable.cs
--- a/Implab/Automaton/IDFATable.cs
+++ b/Implab/Automaton/IDFATable.cs
@@ -31,7 +31,7 @@ namespace Implab.Automaton {
     ///     }
     /// }
     /// </example>
-    public interface IDFATable {
+    public interface IDFATable : IEnumerable<AutomatonTransition> {
         /// <summary>
         /// Таблица переходов состояний автомата
         /// </summary>