@fact Factorial function.

@factlog Natural logarithm of the factorial function.

@fdist Upper tail of F-distribution.

@fileexist Check for existence of a file on disk.

@fill Vector initialized from a list of values.

@filledmatrix Matrix initialized with scalar value.

@filledrowvector Rowvector initialized with scalar value.

@filledsym Sym initialized with scalar value.

@filledvector Vector initialized with scalar value.

@first The first non-missing value in the vector or series.

@firstsby First non-missing value in a series for each specified group.

@floor Largest number less than or equal to with optional precision.

@folderexist Check for existence of a folder on disk

@fracdiff Fractional difference of series data.

@fv Future value of annuity payments and (optional) initial lump sum receipt.