As usual some of the simplest things take the longest time.
I've created a custom structure in the dictionary. I've also created a custom table in which I include the structure. I expected that after I added the include structure to the custom table, that it would be expanded and display in se11, and behave just as SAP-delivered tables do. For example, look at table PA0001. There are include lines followed by the contents of the include.
In my custom table though, I only see the include line itself. To see the structure I must expand it by pressing the expand button. Each and every time I display the custom table I must manually expand it. I want the behavior I see on every other SAP table.