Recreate and display Mz3 book
Normally, a Mz3 book is recalculated whenever it makes sense and is necessary; e.g. before you release it.
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 creation of the Mz3 book does not start and / or no Mz3 book is displayed in the preview area.
These effects are now quite rare, but can not be completely ruled out. It’s impossible to simulate and test everything …
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, mz3Tool must be closed and restarted.