Tile format

A tile is comprised of several data structures that provide several key information about the tile. The most important bit of information is the content, which stores the tile's textual information.

• Tile coordinates (X, Y)
• Content (128 cells)
• Text color
• Background color
• Cell protection values
• Per-cell links (url links and coordinate links)
• Writability (protection value for the whole tile)

A cell within a tile is addressable in two ways. The most common way is by using a set of coordinates with (0, 0) starting at the top left cell of a tile. For instance, the cell at the bottom right corner would have the coordinates (15, 7). The second but less common way is to use a cell index (0 - 127), which starts at the top left cell and goes left to right, top to bottom.

The coordinates of a tile are signed, limited by the maximum and minimum safe values of a double-precision number. The minimum and maximum values are -9007199254740991 and 9007199254740991 respectively. Cartesian coordinates are used, with Y becoming negative as you go up, and positive as you go down. X becomes positive as you go right, and negative as you go left.