Site Columns
*Site column je definice sloupečku použitelne v rámci site *Sloupec je uložen v Site Column Gallery *Použitelné v libovolném listu, dokument library nebo jako typ obsahu (content type) v rámci Site
Instructor Notes
A site column is a column definition that can be created and then reused across multiple lists, document libraries and content types. A site column has a name which is also always the name of column that are based on the site column. A site column also defines the column type, its default value, any special rendering requirements and validation.

Site columns are stored inside the Site Column Gallery of the current site. While a site column is scoped at the site level, it is visible to all the sites below it inside the current site collection. That means a site column defined in a top-level site can be thought of as being scoped to the current site collection.