Editing Guide to mapping (section)

===Dwidth and Dheight in more depth===
dwidth/dheight is the offset of the docking_port obj from the (0,0) bounding box corner. In dir == 1 (north) 0,0 is the bottom left corner? This changes for each direction, For example when dir is 2 it's the upper right corner. so dwidth and dheight identify where the bounding box starts relative to the docking port obj whereaswidth and height determine the actual width and height of the bounding box

'''Note: We count step 0 as a tile, so a height and width of 9 is actually 10 tiles (tile 0 to tile 9)'''

Here is an example for the north facing shuttle dock direction - you can rotate this image to determine where the offset is for each other cardinal direction
[[File:ShuttleBox.png]]