dot 

One dot element is used for each dot of prolongation. The placement element is used to specify whether the dot should appear above or below the staff line. It is ignored for notes that appear on a staff space.

Element Information

Model

Attributes

QName Type Fixed Default Use Inheritable Annotation
color color optional
default-x tenths optional
default-y tenths optional
font-family comma-separated-text optional
font-size font-size optional
font-style font-style optional
font-weight font-weight optional
placement above-below optional
relative-x tenths optional
relative-y tenths optional

Source 

<xs:element name="dot" type="empty-placement" minOccurs="0" maxOccurs="unbounded">
  <xs:annotation>
    <xs:documentation>One dot element is used for each dot of prolongation. The placement element is used to specify whether the dot should appear above or below the staff line. It is ignored for notes that appear on a staff space.</xs:documentation>
  </xs:annotation>
</xs:element>

Sample