I read this on Wikipedia

I read this online.

Which word is correct?

Os the sentence correct? Especially “with the exception that”?

Flags are also flown at halfmaston the day of the burial, with the exception that/when/where the flag is to be hoisted to the finial after the inhumation takes place. Flagsare also to be flown at halfmaston the days of national mourning.

Which is correct? To be or as ?

A finialor hip-knobis an element marking the top or end of some object, often formed to be/as a decorative feature.

thanks