What does the option na.ona.omit mean in factor analysis in R




While doing factor analysis I came upon an option na.ona.omit as shown below
fit <- factanal(na.omit(auto_copy), 3, rotation=“varimax”,na.ona.omit).
I could not find any documentation on it as typing ?na.ona.omit doesn’t bring up anything.The strange this is neither an error occurs.
So can somebody please help me understand what this argument does?


Does the command still work without giving an error if you use auto_copy only instead of na.omit(auto_copy)?