Function createEmphasisMark

createEmphasisMark(emphasisMarkType?: "dot"): XmlComponent
Creates an emphasis mark element for a WordprocessingML document.

Emphasis marks are characters (typically dots or circles) placed above or below text to emphasize it. This is commonly used in East Asian typography.

Reference: http://officeopenxml.com/WPrun.php

XSD Schema
```
<xsd:complexType name="CT_Em">
  <xsd:attribute name="val" type="ST_Em" use="required"/>
</xsd:complexType>
```
Parameters
- emphasisMarkType: "dot" = EmphasisMarkType.DOT
Returns XmlComponent
Example
```
// Apply dot emphasis mark
createEmphasisMark(EmphasisMarkType.DOT);

// Default to dot
createEmphasisMark();
```
- Defined in file/paragraph/run/emphasis-mark.ts:67