diff --git a/errgroup/errgroup.go b/errgroup/errgroup.go
index b18efb7..948a3ee 100644
--- a/errgroup/errgroup.go
+++ b/errgroup/errgroup.go
@@ -4,6 +4,9 @@
 
 // Package errgroup provides synchronization, error propagation, and Context
 // cancelation for groups of goroutines working on subtasks of a common task.
+//
+// [errgroup.Group] is related to [sync.WaitGroup] but adds handling of tasks
+// returning errors.
 package errgroup
 
 import (