You can
reference all parts of coordinate systems, such as planes, axes, and origin, in downstream
features. For example, you can sketch on the XY plane
of a coordinate system or use the Z axis of a
coordinate system as the axis for a revolve feature.
In a part or assembly, click

and create the coordinate system.
Hover over a plane, axis, or the origin to highlight each entity. This functionality is
useful for actions such as sketching, mating, and more.
To see this
functionality, show coordinate systems. Click .
To select an entire coordinate system instead of the origin or individual planes
or axes, in the graphics area, Alt + select the coordinate
system.