1 files changed, 4 insertions, 0 deletions
diff --git a/chart.go b/chart.go
index 23ea776..9bc4b20 100644
--- a/chart.go
+++ b/chart.go
@@ -739,6 +739,7 @@ func parseFormatChartSet(formatSet string) (*formatChart, error) {
 //
 // Set the primary horizontal and vertical axis options by x_axis and y_axis. The properties of x_axis that can be set are:
 //
+//    none
 //    major_grid_lines
 //    minor_grid_lines
 //    tick_label_skip
@@ -748,6 +749,7 @@ func parseFormatChartSet(formatSet string) (*formatChart, error) {
 //
 // The properties of y_axis that can be set are:
 //
+//    none
 //    major_grid_lines
 //    minor_grid_lines
 //    major_unit
@@ -755,6 +757,8 @@ func parseFormatChartSet(formatSet string) (*formatChart, error) {
 //    maximum
 //    minimum
 //
+// none: Disable axes.
+//
 // major_grid_lines: Specifies major gridlines.
 //
 // minor_grid_lines: Specifies minor gridlines.