Appends a form feed character ('\f', character code 0x000C) to the text. This causes any text added after it to "not fit" - if the text layout is drawn, that text will not be rendered. If the Split() method is called, the text will be split at this point.

'宣言
 
Public Overloads Function AppendSectionBreak( _
   ByVal format As TextFormat _
) As TextRun

public TextRun AppendSectionBreak( 
   TextFormat format
)