diff --git a/graph.rkt b/graph.rkt
index da1d357..a79f8b9 100644
--- a/graph.rkt
+++ b/graph.rkt
@@ -110,8 +110,6 @@
   (define (matrix-graph? g)
     (g:matrix-graph? (gg g)))
 
-  ;; 3 Graph properties are not supported.
-
   ;; 4 Basic Graph Functions
   ;; 4.1 Breadth-first Search
   (define (bfs g source)
@@ -164,8 +162,6 @@
   ;; 2.3 Matrix Graphs
   [matrix-graph? (-> Graph Boolean)]
 
-  ;; 3 Graph properties are not supported.
-
   ;; 4 Basic Graph Functions
   ;; 4.1 Breadth-first Search
   [bfs (-> Graph Any (Values (Mutable-HashTable Any Number)