These are variants of the Microsoft fonts, Calibri and Sitka Small, which are intended to help readers with visual crowding by adding extra space between letters, words, and lines. Visual crowding is sometimes associated with dyslexia.
Microsoft Fluent Fonts can be installed on both 32-bit and 64-bit versions of Windows. For non-Windows platforms, there must be support for installing system-wide fonts and extracting files from a ZIP file.
Install Instructions
For Windows platforms, select the file "Microsoft Fluent Fonts.msi" and open the file. For non-Windows platforms that support installing fonts, select the file "Microsoft Fluent Fonts for non-Windows OS.zip". Extract the files, read the file "Microsoft Fluent Fonts EULA.rtf" in a document viewer, and install the font files.
