India, Sept. 4 -- I hope you've enjoyed journeying across India through its signs. Over the past few columns, it's been a thrill to be your typographic curious companion. I hope I was able to turn an ordinary walk through your city into a journey of hidden stories. We discovered how fonts and colours speak of identity, language, and place-and how moving canvases such as rickshaws, and unlikely spaces such as bus facades echo our rhythms.

There are three types of signs that don't really fall into a particular category. I want to talk about them a bit before we call it a day.

Graffiti has transitioned from an underground movement to a respected form of public art in India. Much of it - simple tags, elaborate murals and everything in betwe...