I'd be happy to help you with your request.

It seems like you have provided a key-value pair for downloading VueScan + x64 9.8.17 for Mac. The key is 'for mac download VueScan + x64 9.8.17' and the value is the text describing the software, its features, and how to use it.

Here's a summary of the information provided:

* VueScan is an alternative program that allows users to scan documents and photos using their scanner.

* It can be used with most high-quality flatbed and film scanners.

* The software produces scans with excellent color fidelity and balance.

* There are different versions available, including VueScan 9.8.21 which was released on November 7, 2023.

Additionally, the text provides instructions on how to use certain features of VueScan, such as:

* How to scan photos using an automatic document feeder

* How to change the output folder and auto file name

* How to scan film with VueScan

* How to scan a photo

It also provides information on the developer's website, user reviews, and comments.

As for downloading VueScan Pro 9.8.17 Multilingual, you can download it from the provided link (around 33.4 MB). This version is suitable for both home users and professionals.

Please let me know if there's anything else I can help you with!

For mac download VueScan + x64 9.8.17