Is there documentation for displaying other columns in sitef

I was originally looking for a way to display the GUID of content blocks in the content blocks list you see in the SF backend. I found this www.sitefinity.com/.../get-current-content-id-from-field-control- . In the last comment a user found how to add ID of events to the ContentViewEdit Dialog so I did same thing to the grid control for Content blocks. Now I can see the Content Block Id in the list of content blocks. This led me to wonder if there were other columns I'm not aware of that I could possibly display and not just content blocks, but other types of content as well. In the database the id column of the content block is called content_id so I was happy and surprised when all I had to use was just Id instead of content_id.

Now my question. Is there documentation any where that discusses the other columns you can display like the content_id column? If there isn't could someone tell me what they are?