Quads are generated starting with the upper-right most square. That is, the square with the smallest first letter, then second letter. For each square, if there is at least one ajdacent square, a quad is generated in that direction. Given a square, the quad is generated in this order: N ---------------------- | | | | | 3 | 2 | 3 | | cc | cb | ca | |--------------------- | | | | W | 4 | 1 | 4 | E | bc | bb | ba | |-------------|------- | | | | | 3 | 2 | 3 | | ac | ab | aa | |--------------------| S If 2 or 4 exist, two quad views must be generated (e.g. NE and SE). If only 3 exists, only one quad view is generated. For the purpose of generating the Quad level HTML, the squares are labeled as: </> <body> |-------------| | | | | 1 | 2 | | | | |-------------| | | | | 3 | 4 | | | | |-------------| </> </>