In production it can be handy to have a custom shot mask for your camera that indicates important information. Cinema 4D has some information that you can burn on the screen, but it is pretty limited. No worries though, you can easily create your own shot masks, for any HUD-like element that you want to have.
Custom shot mask elements are great for animatic renders, listing names of shots, takes, and adding things like names of who worked on the shot. Lars Scholten, otherwise known online as CyBear, shows how you can create your own shot masks in C4D using a bit of Xpresso. Now you can write anything out on an on-screen HUD for your shots. Nice!