diff --git a/main.go b/main.go
index 84e18af..83815cb 100644
--- a/main.go
+++ b/main.go
@@ -200,6 +200,7 @@ func NewFlex(fos ...FlexOption) Flex {
 
 	return func(ws ...Widget) Widget {
 		return NewfWidget(func(ctx Context) Context {
+		// ensure child widgets write options to the right place
 			extra.cur = index
 			opts := extra.data[index].(*FlexOpts)
 			f.Init(ctx.ops, ctx.cs)