diff --git a/idleshut.go b/idleshut.go
index 5e5ad6a..316b0ae 100644
--- a/idleshut.go
+++ b/idleshut.go
@@ -6,22 +6,22 @@ import (
 	"time"
 )
 
-// Config are the options for creating a new process
+// Config contains the options for creating a new process.
 type Config struct {
 
-	// Start is called by Process.Start. If an error is returned,
+	// Start, if non-nil, is called by Process.Start. If an error is returned,
 	// starting the process is aborted.
 	Start func() error
 
-	// Stop is called by Process.Stop. If an error is returned,
+	// Stop, if non-nil, is called by Process.Stop. If an error is returned,
 	// stopping the process is aborted.
 	Stop func() error
 
 	// If TickDuration is non-zero, the process will count ticks where
-	// the process is active or idle, identified as active by calling
-	// the Touch() method. When the process has been idle for more than
-	// MaxIdleTicks, it will be stopped. If ticking is enabled, TickError
-	// must be set or operations will result in a panic.
+	// the process is active or idle. Process are kept active by the user
+	// calling the Process.Touch() method. When the process has been idle for
+	// more than MaxIdleTicks, it will be stopped. If ticking is enabled,
+	// TickError must be set or operations will result in a panic.
 	TickDuration time.Duration
 	TickError    func(error)