update comments

Author: dgodinez-dh

packages/grid/src/GridMetricCalculator.ts

@@ -612,11 +612,11 @@ export class GridMetricCalculator {
       scrollableViewportWidth,
       scrollableViewportHeight,
 
-      // Array of visible rows/columns, by grid index
+      // Array of visible (i.e., in the viewport) rows/columns, by VisibleIndex
       visibleRows,
       visibleColumns,
 
-      // Array of visible, non-hidden columns, by grid index
+      // Array of visible, non-hidden columns, by VisibleIndex
       columnsForRender,
 
       // Map of the height/width of columns in the viewport (excluding floating columns)

packages/grid/src/GridMetrics.ts

@@ -129,11 +129,11 @@ export type GridMetrics = {
   scrollableViewportWidth: number;
   scrollableViewportHeight: number;
 
-  // Array of visible rows/columns, by grid index
+  // Array of visible (i.e., in the viewport) rows/columns, by VisibleIndex
   visibleRows: readonly VisibleIndex[];
   visibleColumns: readonly VisibleIndex[];
 
-  // Renderer performance optimization - array of visible, non-hidden columns, by grid index
+  // Renderer performance optimization - array of visible, non-hidden columns, by VisibleIndex
   // Use visibleColumns if hidden columns should be included (e.g. rendering column headers)
   columnsForRender: readonly VisibleIndex[];