Within ACL 4, classification information enters the scale. The simplest classification is the grouping of actions together to do an activity.
Actions are classified as steps that are done in a sequence to complete an activity. The concept of being done or finished guides performance and signifies the end. The reason can be put into words, such as getting dressed or copying a sample of what they are going to make.
Within ACL 4, people can only classify when the supplies are in front of them to look at or touch.