It's not my research.
This is a Personal Knowledge Management tool. There are several that people use, some use Notion, some use Word/Google docs, some use text file notes, some use Roam Research, some use Evernote, some use Microsoft OneNote. They all look different and some people get on better with some of these rather than the other.
From Google:
"Personal knowledge management (PKM) is a process of collecting information that a person uses to gather, classify, store, search, retrieve and share knowledge in their daily activities (Grundspenkis 2007) and the way in which these processes support work activities (Wright 2005)."
The one I am using for this is, Obsidian: https://obsidian.md/
The app is written by other people and is free. It's just some software. You use it to create text files that contain your text in the Markdown format (https://www.markdownguide.org/getting-started/) that lots of software developers use and know about. The files are mostly readable by a human but have extra syntax on them, which lets Obsidian link the files together.
What you put inside the text files are up to you (my main folder has everything from finances to computers and house related info in it).
I've mainly been looking through the pages on this forum and pasting it into the files I have - so that I don't have to search for these informations again in the future all over again - the lovely people like Lotus are the real ones that did the research.
I hope that helps shine the light on this a bit better.