Use the Highlight Instances function to easily determine what entities are instance-specific or tagged entities. Such entities are highlighted to distinguish them from the remaining geometry.

Using the Function:

Select Show Instance Geometry from the Layout Menu. All instance-specific and/or tagged entities will be highlighted, using the color attribute set under File>Properties>Colors and Attributes>Highlight. To un-highlight instance specific or tagged entities, simply select the Highlight Entities function again.