According to the commentary on the closing verse of chapter 5, why is the book called Kalyāṇakāraka?

Detailed answer

Verse 45 likens the work to a drop drawn from the ocean of scripture that came from the mouth of the Jina, whose waves are all substances and principles and whose two shores are the means to the aims of this world and the next; the commentary concludes that it is therefore named Kalyāṇakāraka.