- <xs:element name="displayCharacter" type="xs:string"/>\r
- <xs:element name="description" type="xs:string"/>\r
- <xs:element name="secondaryStructure">\r
+ <xs:element name="displayCharacter" type="xs:string" minOccurs="0"/>\r
+ <xs:element name="description" type="xs:string" minOccurs="0"/>\r
+ <xs:element name="secondaryStructure" minOccurs="0">\r