10 Years ago. with Xpress 4.0, there was the option to freeze hyphenation.
After you send a Version to the client, you can freeze the hyphenation and after that, only manually hyphenation and line breaks are common.
Reason: Client wants other hyphenations or line breaks, after he becomes the next version, there are more new hyphenations followed by the next correction. And finaly, you have broken every line manually.