Rule for InnerDescriptionFile

[<DimensionSection>]
[<NameSection> [<MapSection>]]
(<RCVS> [(<RCES>|<CES>)] | <RCES> | <CES> | <CVS> [(<RCES>|<CES>)])

Note that there must be at least one of the sections <RCVS>, <CVS>, <RCES> and <CES>.

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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).

CVS: ConvSection
CES: ConeSection
RCVS: ReducedConvSection
RCES: ReducedConeSection