Recreate and display Mz3 book
Usually, an Mz3 book is rebuilt whenever it makes sense and is necessary; e.g. before it is published.
For unexpected operations (too many windows open, commands to enter while a task is still running, unexpected order of commands, cancellation before the state has been backed up, calculator-related runtime differences, …) it can happen from time to time that a creation of the Mz3 book does not start and/or the Mz3 book is not shown in the preview area.
These effects are pretty rare but still can happen.
In such cases, the menu item “Update” is a good help and can save you a complete restart of the program.
This command causes a “reset” and recreates the Mz3 book.
If necessary, i.e. when an Update does not solve the problem, mz3Tool must be closed and restarted.