Messages are the customizable snippets of text that appear throughout the entity form. By default, there is a set of predefined messages that can be edited and replaced as needed.
Do not confuse these messages with the plugin execution messages. That is a development topic, completely different from what we cover in this book.
The following screenshot shows how a standard Messages configuration window looks:
All the messages that are being changed from the default messages must be published before they are made visible to all the users.
The view presents the Default Display String, Custom Display String (which is the string we have modified), ...