diff --git a/src/bin/render_lines_gui.rs b/src/bin/render_lines_gui.rs
index c996da5..9c389a9 100644
--- a/src/bin/render_lines_gui.rs
+++ b/src/bin/render_lines_gui.rs
@@ -782,7 +782,7 @@ fn view_line_canvas(app: &App, model: &GuiModel, frame: Frame) {
     draw.to_frame(app, &frame).unwrap();
 }
 
-
+// preview the selected laser, to draw clip mask
 fn view_laser_preview(app: &App, model: &GuiModel, frame: Frame) {
     // get canvas to draw on
     let draw = app.draw();