Vectorial Tile Format (VTF) is a format to store large tilemaps in small bytespaces.
There are two kinds of VTF: XVTF (XML-based Vectorial Tile Format) and BVTF (Binary Vectorial Tile Format). Both share a specification in common, but each uses their own structure to store it.
XVTF is an XML document that stores VTF data using a structure that looks like the following: