diff --git a/src/syntax.c b/src/syntax.c
index ee8b98c..943a0c1 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -5,6 +5,10 @@
 
 #include <assert.h>
 
+/*******************************************
+ * Special syntax to use in the executable *
+ *******************************************/
+
 struct Object *syntax_repl(
     struct Object *args,
     struct Object *const environment
@@ -19,6 +23,10 @@ struct Object *syntax_script(
     return eval(args, environment);
 }
 
+/*******************
+ * Syntax keywords *
+ *******************/
+
 struct Object *syntax_begin(
     struct Object *args,
     struct Object *const environment
diff --git a/src/syntax.h b/src/syntax.h
index ca28260..bc107df 100644
--- a/src/syntax.h
+++ b/src/syntax.h
@@ -3,9 +3,17 @@
 
 #include "object.h"
 
+/*******************************************
+ * Special syntax to use in the executable *
+ *******************************************/
+
 struct Object *syntax_repl(struct Object *args, struct Object *environment);
 struct Object *syntax_script(struct Object *args, struct Object *environment);
 
+/*******************
+ * Syntax keywords *
+ *******************/
+
 struct Object *syntax_begin(struct Object *args, struct Object *environment);
 struct Object *syntax_define(struct Object *args, struct Object *environment);
 struct Object *syntax_if(struct Object *args, struct Object *environment);