I heard a expression "keep tabs". I could find the meaning by dictionary and also found a meaning of "tab":
a small flap or strip of material attached to or projecting from something, used to hold, fasten, or manipulate it, or for identification and information.
To my mind comes up with the description only vague image, so I want to see the image itself. But I couldn't find the image of a "tab", because all google image search result are tabs that is related to computers.
Does anyone know where to find the images of "tabs" in internet?