Multi-tile object
Many objects reside on more than one tile in game. When modding it is useful to know a number of things about multi-tile objects which are pulled together in this page.
Which tile is which?
The co-ordinate system used by the game is slightly different than you might first imagine. It is important to know how this works for various reasons. In short, the X-axis works from right to left, instead of how you might (having been brought up on Cartesian graphs) expect. The Y-axis controls from front to back rather than height. The Z-axis controls the height.
When you produce an object that covers multiple-tiles, you may need to know which tile is referred to with which co-ordinates. Here is a little picture to act as a guide. This makes sense when you understand what is noted above, and that is that the X-axis starts from zero on the right instead of on the left.