Google docs not sending notification

Question

Does anyone know why I do not get a notification when someone changes the shared document? My Notification settings are set as below (* means it's set):

   Don't send me any email notifications for this doc (not recommended)
 * Enable email notifications for this document's threads

 * Notify me of all new comments and replies on this document
 * Notify me of replies to my comments
 * Notify me of replies to threads that I have commented on
 * Notify me when I am @ mentioned in a comment

Answer 1

Those settings are not for notifying you when the document changes. They are for notifying you when comments on the document change.

You can subscribe to changes in a spreadsheet (on the Tools menu), but you cannot (yet) subscribe to changes in a document.