After you have logged a segment, you can create a new segment containing the exact same contacts as the logged segment. For example, after sending information to a group of contacts, you may want to send these contacts additional information, for example,as follow-up action for a campaign.
If you want to create a segment containing an updated list of contacts matching the same segmentation criteria as the other segment, you can use the Segment, Reuse, Criteria function.
Open the 
Segment window.
Press F3 to enter a new segment.
In the No. field, enter a new number for the segment and, in the Description field, enter a new description for the segment.
Fill in the other fields on the header. For Help about a specific field, click the field and press F1.
Click Functions, Segment, Reuse, Logged. The Logged Segment window appears.
Select the logged segment containing the contacts you want to add to your segment, and click OK.
The program fills in the segment lines with the same contacts as in the selected logged segment.
Click Functions, Segment, Go Back, if you want to go one step back.
Creating Interactions for Segments