Rule for SupplementaryInnerDescriptionFile

(<ConvSection> [<ConeSection>] | <ConeSection>)

Note that at least either a <ConvSection> or a <ConeSection> has to be present.

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Legend

[X]: X is optional.
(X|Y|Z): One of X, Y or Z is present.
(A-E): Any ASCII symbol between symbol A and E.
X*: X may occur any number of times (including zero).