At some point you might want to change a name, or something significant but going through all of the codex/story to change this can be a HUGE job. So there should be a way where you can chat to your whole codex/story and fix issues that could potentially jeopardize your whole story. I for example came up with a name for a character that I thought was unique enough, later on I found out that it's actually heavily used name in other IPs so I had to spend a huge amount of time correcting codex entries and story lines. It would have been good to be able to simply highlight the text you want to change throughout the codex and/or the story and mass change it.