Advance Steel automatically places certain object snaps at useful points during modeling.
The complete list of object snaps is available in the AutoCAD platform help (See OSNAP).
There are two additional object snap types specifically created for Advance Steel.
When working in 3D there can be so many snap points available that it can be difficult to make sure that the required point or plane was selected. However, if you must work in only one plane (elevation, plan view or top view of a building, situations where points overlap) it is useful to restrict the cursor only to the desired plane.
You can switch between 2D and 3D snap modes:
(2D snap mode on) | The Z coordinate is ignored, and replaced with 0 in the current UCS. |
(2D snap mode off) | The default working mode. All object snaps are selected in 3D. |