Is your feature request related to a problem? Please describe

Some users of the new NVDA Magnifier may have severely impaired vision. For these users, 10× magnification is likely to be insufficient.

Describe the solution you'd like

Increase the maximum magnification level:

• Windows Magnifier supports up to 16× magnification;
• Zoom Text claims to support up to 36× magnification;
• My electronic magnifier supports up to 22× magnification.

Describe alternatives you've considered

Force these users to use another magnification package

Additional context

While some may argue that if you need higher levels of magnification than 10× you should be using speech and/or braille instead, this argument is rather unconvincing. For one thing, users may already be using them, but occasionally want to view what is on screen, for example to use an inaccessible GUI, or to inspect pictures.

As far as I can see, there is no documented maximum scale factor for the Windows magnification API. At a minimum, I would suggest a maximum of 16× since we know that the API is capable of this level of magnification since Windows Magnifier can do it.