1 files changed, 12 insertions, 1 deletions

diff --git a/graph.h b/graph.h
index 175b0967fa43..abffdc2c83ba 100644
--- a/graph.h
+++ b/graph.h
@@ -1,6 +1,16 @@
 #ifndef GRAPH_H
 #define GRAPH_H
 
+#define ZOOM_5y 0
+#define ZOOM_4y 1
+#define ZOOM_3y 2
+#define ZOOM_2y 3
+#define ZOOM_1y 4
+#define ZOOM_9m 5
+#define ZOOM_6m 6
+#define ZOOM_3m 7
+#define ZOOM_1m 8
+
 #define ROWS_SPACING 5
 #define COLS_SPACING 12
 #define DAYS_TO_BUSINESS_DAYS_RATIO (29.0/20.0)
@@ -14,6 +24,7 @@
 
 /**
  * Main input loop
+ * Entering the key UP or DOWN will zoom in or out one level
  * @param ticker_name_string symbol
  */
 void graph_main(const char* ticker_name_string);
@@ -25,6 +36,6 @@ void graph_main(const char* ticker_name_string);
  * @param points daily close prices
  * @param start_time the starting date
  */
-void graph_print(const double* points, struct tm* start_time);
+void graph_print(const double* points, struct tm* start_time, int zoom);
 
 #endif
\ No newline at end of file