SBase 

The SBase type is the base type of all main
components in SBML.  It supports attaching metadata, notes and
annotations to components.

Complex Type Information

Model

notes{0,1} , annotation{0,1}
Children: annotation, notes

Attributes

QName Type Fixed Default Use Inheritable Annotation
metaid xsd:ID optional
sboTerm SBOTerm optional

Used By

Complex Types Compartment, CompartmentType, Constraint, Delay, Event, EventAssignment, FunctionDefinition, InitialAssignment, KineticLaw, ListOfEventAssignments, ListOfModifierSpeciesReferences, ListOfParameters, ListOfSpeciesReferences, ListOfUnits, Model, Parameter, Reaction, Rule, Sbml, SimpleSpeciesReference, Species, SpeciesType, StoichiometryMath, Trigger, Unit, UnitDefinition
Elements Model/listOfCompartmentTypes, Model/listOfCompartments, Model/listOfConstraints, Model/listOfEvents, Model/listOfFunctionDefinitions, Model/listOfInitialAssignments, Model/listOfReactions, Model/listOfRules, Model/listOfSpecies, Model/listOfSpeciesTypes, Model/listOfUnitDefinitions

Source 

<xsd:complexType name="SBase" abstract="true">
  <xsd:annotation>
    <xsd:documentation>The SBase type is the base type of all main components in SBML. It supports attaching metadata, notes and annotations to components.</xsd:documentation>
  </xsd:annotation>
  <xsd:sequence>
    <xsd:element name="notes" minOccurs="0">
      <xsd:complexType>
        <xsd:sequence>
          <xsd:any namespace="http://www.w3.org/1999/xhtml" processContents="skip" minOccurs="0" maxOccurs="unbounded"/>
        </xsd:sequence>
      </xsd:complexType>
    </xsd:element>
    <xsd:element name="annotation" minOccurs="0">
      <xsd:complexType>
        <xsd:sequence>
          <xsd:any processContents="skip" minOccurs="0" maxOccurs="unbounded"/>
        </xsd:sequence>
      </xsd:complexType>
    </xsd:element>
  </xsd:sequence>
  <xsd:attribute name="metaid" type="xsd:ID" use="optional"/>
  <xsd:attribute name="sboTerm" type="SBOTerm" use="optional"/>
</xsd:complexType>