ArcGIS PRO Spell check dictionary path

[VHolubec]

Hello,

does anyone knows, where the PRO has its spell check dictionary stored? 

I was able to find that the custom one is stored there - C:\Users\<user>\AppData\Roaming\Microsoft\Spelling, but I am not able to find there the default one. Is it related to Microsoft office dictionary? 

Thank you,

Vladimir