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The 'Workplace' panel is hierarchical display of items (concepts, queries) added by the user. There are three main branches or components of the tree that displays. 

7.1.1

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Containers

Containers are the highest level folder folders ( ) that are created automatically. The User folder is created container is created with the user's name and it is used to store items added by the individual user. This level cannot be used when creating a query. The SHARED folder is  container is a place to share concepts and queries with other users.    Containers cannot be dragged into 'Query Tool' groups as query criteria.

7.1.2 Folders

A folder ( ) contains other folders and / or items added by the user. It can be expanded and collapsed by clicking on the plus sign ( ) or negative sign ( ) next to it. A user defined folder cannot be dragged to other i2b2 panels. It can be moved around within the 'Workplace' panel. 

7.1.3 Leaves (Items)

Items are the lowest level of the hierarchy. They cannot be expanded further. Some examples of items are listed below. 

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