My research around the topic How to Add a Paragraph with the Same Format As the One Before? led to an observation that I wanted to share.
Aspose.Slides allows inserting a newline character into a portion like
using (va…...around the topic How to Add a Paragraph with the Same Format As the...First(); shape.TextFrame.Paragraphs[2].Portions[0].Text = "Bullet2\nBullet3";...