Self-review.

CHANGELOG.md

@@ -37,7 +37,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 #### Text input form functionality with keyboard navigation
 
-- added a new `formdemo` that demonstrates the text input form with keyboard
+- added a new `formdemo` that demonstrates a text input form with keyboard
   navigation.
 
 #### Infrastructure changes

widgets/button/formdemo/formdemo.go

@@ -1,4 +1,4 @@
-// Copyright 2019 Google Inc.
+// Copyright 2020 Google Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -68,18 +68,25 @@ func buttonChunks(text string) []*button.TextChunk {
 	}
 }
 
-// form contains the elements of a text input form
+// form contains the elements of a text input form.
 type form struct {
+	// userInput is a text input that accepts user name.
 	userInput *textinput.TextInput
+	// uidInput is a text input that accepts UID.
 	uidInput *textinput.TextInput
+	// gidInput is a text input that accepts GID.
 	gidInput *textinput.TextInput
+	// homeInput is a text input that accepts path to the home folder.
 	homeInput *textinput.TextInput
+
+	// submitB is a button that submits the form.
 	submitB *button.Button
+	// cancelB is a button that exist the application.
 	cancelB *button.Button
 }
 
 // newForm returns a new form instance.
-// The cancel argument is a function that terminates Termdash when called.
+// The cancel argument is a function that terminates the application when called.
 func newForm(cancel context.CancelFunc) (*form, error) {
 	var username string
 	u, err := user.Current()