It is possible to know the detailed information of the scenes?

Hi, thanks for the great work! I was trying the ai2thor framework recently and had a few questions mainly related to the scenes:

1. When a controller is initialized, a scene may be set by name (string), e.g., "FloorPlan_Val3_1". So, where can I find the detailed specification of a scene? For example, I would like to know where did you store the specs of the scene "FloorPlan_Val3_1". Since the backend of the ai2thor is empowered by Unity, maybe there are some unity spec files somewhere?

2. It is possible to know the detailed size and position/orientation of the wall blocks? I know it is easy to read such information of an object from metadata in each step's event, but I was unable to find attributes for each wall blocks. I found that, if I render the segmentation information, the "color" section can give me some information of each wall, e.g., position. However, in order to build a approximated model of the entire scene, I need to know the size/position/orientation of them.

Could you please help me out of these questions? Thanks in advance!