If a polyphonic extension starts with a vowel or vowel sound, use ‘an”, whether you include the preceding dot or not. With

a css here, I agree the first example he gives, which (following Dnaaz’s advice as modified above) should read an.html. I also agree with LightMikeE’s reply except for the first example he gives, which should read “an.html.” “Don’t

you think it’s possible to be a man or woman?