[XeTeX] [tex-live] fc-cache documentation ?

[Philip Taylor]

Jonathan Kew wrote:
> Maybe running with   \XeTeXtracingfonts=1   would provide some clues?

Thank you Jonathan -- indeed it does :

> Requested font "[Frederika2016.otf]" scaled 1000
>
> -> c:/Windows/fonts/Frederika2016.otf
>
>
> Requested font "Frederika2016" scaled 1000
>
> -> D^^A/Windows/fonts/Frederika2016.otf
>

However, I cannot find "Frederika2016.otf" in C:/Windows/fonts (even as System Administrator), and do not know how to interpret "D^^A/Windows/fonts/Frederika2016.otf".
A thought :  I wonder if C:/Windows/fonts is unwriteable to normal users, and therefore Windows UAC has created a hidden directory which it covertly maps to C:/Windows/Fonts ...

** Phil.