4th axis wrapping uses the rotary table as a continuously moving axis. Rotation occurs during the machining operation and the tool movement is limited to either the X or Y axis and the Z axis. Wrapping is limited to cylindrical stock shapes. A side effect of wrapping is that all arc moves must be converted to linear moves for posting. See Wrap tolerance for further information.
Any milling feature can be wrapped using 4th axis wrapping or turn/milling. The figure below shows a simple groove that is wrapped around the X axis.
Note that the features are not displayed as wrapped, but when you generate toolpaths for a wrapped setup, the toolpaths are wrapped.
See also
Basic 4th axis wrapping requirements
How to create a NC program using 4th axis wrapping
Creating a 4th axis wrapped feature from a 3D model