begin 

Specifies a point where the relevant content begins. A numerical value
must be less and a time value must be earlier than that given by the end
attribute.

Attribute Information

Used By

Attribute Group mei:mei_att.mediabounds.attribute.begin

Source 

<xs:attribute name="begin">
  <xs:annotation>
    <xs:documentation>Specifies a point where the relevant content begins. A numerical value must be less and a time value must be earlier than that given by the end attribute.</xs:documentation>
  </xs:annotation>
</xs:attribute>

Sample