A flip action allows you to flip a dynamic block reference about a specified axis called a reflection line.
With a flip action, you can flip a dynamic block reference about a specified axis called a reflection line.
In a dynamic block reference, a flip action causes its associated selection set to flip about an axis called a reflection line when the associated parameter is edited through a grip or the Properties palette.
In a dynamic block definition, you can associate a flip action only with a flip parameter. The flip action is associated with the entire parameter, not a key point on the parameter. After associating a flip action with a flip parameter, you associate the action with a selection set of geometry. Only the selected objects will flip about the reflection line.
For example, in the following illustration, the polyline between the two circles is not included in the flip action's selection set. When the block reference is flipped, the polyline does not flip with the rest of the geometry.