Can .pf files be safely removed from my computer?

i am using c-cleaner on my pc to clean visited web sites ,cookies ,temp folders. i also scan for issuses and is given the option to delete known issues, i have to find those issuse wit the search engine for example like the .pf file but a whole lot of files come up with that on them so i have no idea if they all... show more i am using c-cleaner on my pc to clean visited web sites ,cookies ,temp folders. i also scan for issuses and is given the option to delete known issues, i have to find those issuse wit the search engine for example like the .pf file but a whole lot of files come up with that on them so i have no idea if they all can be deleted.
i would appreciate any feed back on this from someone who might be able to tell me if i can or cannot delete .p file without harming my pc.
thank you very much
josie
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