1 files changed, 6 insertions, 3 deletions
diff --git a/eval.h b/eval.h
index 0ec08f3..78ede95 100644
--- a/eval.h
+++ b/eval.h
@@ -2,13 +2,16 @@
 #define EVAL_H
 #include "model.h"
 
+/** @class Evaluator 
+ * A runtime platform of interpreting
+ */
 class Evaluator {
     private:
-        Environment *envt;
-        void add_builtin_routines();
+        Environment *envt;              /**< Store the current environment */
+        void add_builtin_routines();    /**< Add builtin routines to the env */
     public:
         Evaluator();
-        EvalObj *run_expr(Cons *prog);
+        EvalObj *run_expr(Cons *prog);  /**< Interpret a program */
 };
 
 #endif