To me very best of staring, I think two examples have misbalanced paranteses.

Section `15.4.2.1 Examples' have:

fn:avg((xs:float('INF')), xs:float('-INF')) returns NaN.

I think it should be:

fn:avg((xs:float('INF'), xs:float('-INF'))) returns NaN.


It also have:

fn:avg(($seq3, xs:float('NaN')) returns NaN.

which I think should be:

fn:avg(($seq3, xs:float('NaN'))) returns NaN.


Cheers,
Frans