The sentence states:
"A CompositionPlaylist element shall contain exactly zero or one CompositionMetadataAsset element (see Figure 2) in the first Reel element of the ReelList element."
Zero if plural; as such, it should read:
"A CompositionPlaylist element shall contain exactly zero or one CompositionMetadataAsset elements (see Figure 2) in the first Reel element of the ReelList element."
I know that it seems strange, but if only zero, then it would be "zero elements."
The sentence states: "A CompositionPlaylist element shall contain exactly zero or one CompositionMetadataAsset element (see Figure 2) in the first Reel element of the ReelList element."
Zero if plural; as such, it should read: "A CompositionPlaylist element shall contain exactly zero or one CompositionMetadataAsset elements (see Figure 2) in the first Reel element of the ReelList element."
I know that it seems strange, but if only zero, then it would be "zero elements."