y-position 

The y-position attribute group is used for elements like stems where specifying y position is common, but specifying x position is rare.

Attribute Group Information

Attributes

QName Type Fixed Default Use Inheritable Annotation
default-x tenths optional
default-y tenths optional
relative-x tenths optional
relative-y tenths optional

Used By

Complex Type stem

Source 

<xs:attributeGroup name="y-position">
  <xs:annotation>
    <xs:documentation>The y-position attribute group is used for elements like stems where specifying y position is common, but specifying x position is rare.</xs:documentation>
  </xs:annotation>
  <xs:attribute name="default-x" type="tenths"/>
  <xs:attribute name="default-y" type="tenths"/>
  <xs:attribute name="relative-x" type="tenths"/>
  <xs:attribute name="relative-y" type="tenths"/>
</xs:attributeGroup>