Nice finding! How did you find it? Or did you just tried to insert it at random?
If so how did you edit it? Which program did you use?
We already knew most of the sav phrases, so I started up the game and on the main menu used cheat engine to search for any uses of one of those strings and looked around in the memory nearby to find it.
As for editing the sav file, you can use a hex editor like HxD to open the file and near the bottom you'll find an English string depending on which part of the game you're at. New saves don't have these strings, so you'll have to get to another scene like the void room with the hidden paths (the string will be "The Time") and edit the file then.