I have a fair few duplicate fonts. I opened Font Book and did a "resolve duplicates" which of course resulted in a number of duplicated fonts being switched "off". What I noticed is these duplicated fonts have one each in the /System/Library/Fonts folder as well as the User/Library/Fonts folder. What I would like to do is delete the duplicated fonts (using Font Book to do it) from my User/Library/Fonts folder. Is that safe? I noted the ones that are switched off are the System fonts but I assume if I delete the fonts from my User fonts folder those can be switched back on?