Range allows the deletion of all characters of the range by calling Range.Delete.
Example RangesDeleteText
Shows how to delete all characters of a range.
[C#]
Document doc = new Document(MyDir + "Document.doc");
doc.Sections[0].Range.Delete();
[Visual Basic]
Dim doc As Document = New Document(MyDir & "Document.doc")
doc.Sections(0).Range.Delete()
[Java]
Document doc = new Document(getMyDir() + "Document.doc");
doc.getSections().get(0).getRange().delete();