This .NET class wraps the AcDbMTextFragment ObjectARX struct. 

This class is used to describe a fragment of text as extracted by the ExplodeFragments() function. Each fragment consists of a piece of text with a unique combination of style information (font, size, color, and so on).

Autodesk.AutoCAD.DatabaseServices.MTextFragment

Public sealed Class MTextFragment
Inherits DisposableWrapper

public sealed class MTextFragment : DisposableWrapper;