More fields in Master Table Info (list) than List page

Hello,

Can I show all or most of the master table fields in the Master Table Info (list) while only showing a summary list in the List view.

What I want to do is to show a summary of purchase orders in the Master Table List view then when the user goes to the line item list they see the complete order header in the Master table info.
Is this possible or an I going about it in the wrong way?
Rod