diff --git a/js/quadrilateral/model/QuadrilateralTangibleOptionsModel.ts b/js/quadrilateral/model/QuadrilateralTangibleOptionsModel.ts
index fba98a96..311b2b84 100644
--- a/js/quadrilateral/model/QuadrilateralTangibleOptionsModel.ts
+++ b/js/quadrilateral/model/QuadrilateralTangibleOptionsModel.ts
@@ -12,6 +12,7 @@ import quadrilateral from '../../quadrilateral.js';
 import Range from '../../../../dot/js/Range.js';
 import QuadrilateralQueryParameters from '../QuadrilateralQueryParameters.js';
 
+// REVIEW: Should this be in prototype?
 export default class QuadrilateralTangibleOptionsModel {
 
   // How many values to save and use in the average for calculating new vertex positions. Higher value will reduce