diff --git a/src/data/common.tsx b/src/data/common.tsx
index e5b1fce..4be7004 100644
--- a/src/data/common.tsx
+++ b/src/data/common.tsx
@@ -494,6 +494,12 @@ export function createFormulaPreview(
  * @param id The ID of the feature
  */
 export function isRendered(layer: BaseLayer, id: string): ComputedRef<boolean>;
+/**
+ * Utility function for getting a computed boolean for whether or not a given feature is currently rendered in the DOM.
+ * Note it will have a true value even if the feature is off screen.
+ * @param layer The layer the feature appears within
+ * @param feature The feature that may be rendered
+ */
 export function isRendered(layer: BaseLayer, feature: { id: string }): ComputedRef<boolean>;
 export function isRendered(layer: BaseLayer, idOrFeature: string | { id: string }) {
     const id = typeof idOrFeature === "string" ? idOrFeature : idOrFeature.id;