The default behavior in Visual Studio is to have the document zoom managed per window, with zoom for each new window opened set at 100%. This extension synchronizes the zoom level across all windows and any new window. The settings are saved for future sessions of Visual Studio.
This can be useful for presenting code, allowing users to change the font size using the shortcut 'CTRL+,' or 'CTRL+.' to zoom smaller/larger respectively.
It's also useful for fonts that are designed to be a certain size and don't scale well.