How to window area around a token?

[SilentRuin]

I'm trying to get the map to show a specific area around a token. I can center the token in the map with setViewpoint(x,y,zoom) but the zoom factor does not work. I'm told it is not on the short list to be looked at. So I'm looking for an alternative way of displaying a specific area of a map (like when you fit the map to the window except fitting the specific area of the map to the window). I'm not trying to SIZE the window but trying to fit the specific area of the map (image) in the existing window its displayed in.

This is for FGU.

[Moon Wizard]

There are no APIs like this point.

Regards,
JPG