A semi-permanent type of kaki lima (street vendors), typically on tents tied to poles on the edges, found on the sides of the roads and buildings. There will be spanduk (cloth banner, menu and ads are printed) that cover the whole warung. The cloth cover, making it a tent like is what most people will call as warung tenda, as tenda means tent.
The difference with kaki lima is that warung are located in the same space all the time and commonly open only at night, but there are others that open from noon. The other distinctions are that there are tables and chairs (compact ones) and when you are eating, there will be street traders, beggars or people who sing or play music. Another type of warung is called depot, a smaller size type of restaurant and is usually family owned.