Notes about the S12 file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries
, unused processes and other unfavourable system settings to identify slowdown issues.
The S12 file type is primarily associated with 'SPIRIT' by STI International, Inc.. SPIRIT offers a toolset available to architects, planners and designers across industries. It does this with a hybrid approach; including, an ability to produce documentation that is architectural in nature and not mechanical and use of smart parametric building objects (walls, windows, doors etc.).