1 files changed, 6 insertions, 0 deletions
diff --git a/graph.h b/graph.h
index aff960c7e8..0be62bd8b1 100644
--- a/graph.h
+++ b/graph.h
@@ -18,6 +18,9 @@ struct git_graph;
  * The 'colors_max' argument is the index of the last "reset" entry.
  *
  * This functions must be called BEFORE graph_init() is called.
+ *
+ * NOTE: This function isn't used in Git outside graph.c but it is used
+ * by CGit (http://git.zx2c4.com/cgit/) to use HTML for colors.
  */
 void graph_set_column_colors(const char **colors, unsigned short colors_max);
 
@@ -57,6 +60,9 @@ int graph_is_commit_finished(struct git_graph const *graph);
  * Returns 1 if the line includes the current commit, and 0 otherwise.
  * graph_next_line() will return 1 exactly once for each time
  * graph_update() is called.
+ *
+ * NOTE: This function isn't used in Git outside graph.c but it is used
+ * by CGit (http://git.zx2c4.com/cgit/) to wrap HTML around graph lines.
  */
 int graph_next_line(struct git_graph *graph, struct strbuf *sb);