Thank you for your post.
I'm having a little difficulty understanding your post. If you place the single field on the layout, you should be able to view everything within that field. How are your tags entered into the single field? Are they all carriage returns? Perhaps you can provide more information.
If the tags are in related records, then set up individual portals for each tag entry. That is, the first portal will display the first related record, the second partial displays the second related record, etc.
Any other information you can provide will allow me to help you more.