Ok, we've replaced that bit with the name of the technique above. Also, if someone can find a better article about this, we can change the URL. The current article is short on information and looks lifted from other sources.
This article mentions that he accidentally discovered this in 2009... here's an article from 2006 mentioning fragging https://www.advancedaquarist.com/2006/3/aafeature3 that also mentions that folks were doing it in the 90's
It sounds like you can fragment a larger coral, put them close together, and as they grow they'll actually fuse together, instead of competing, and becoming sexually mature much sooner.
Typically speaking, and based off a very small amount of experience of my own keeping a nano coral tank years ago, coral of the same type (zoanthids of different colors in my case) would run into each other, compete for the same space, and sometimes kill or drive back the other.
