How do I find a column’s internal name?

You find a site column’s internal name by:

1. Open a site content type where the column is used.
2. Click on the site column whose internal name  you want to find, in this example the “Keyword” column:
   
3.  In the column’s page, click on the link “Edit site column”:
   
4. The internal name is displayed in the web browser’s address bar after the query string “&Field=”:
   
   In the example above the site column’s internal name is: Keyword