# Dictionaries

Each drawing contains one root dictionary, the named-objects dictionary. Within the root dictionary, you can create dictionaries, which can also contain dictionaries. This allows you to create a hierarchical structure of dictionaries.

Dictionaries:

- contained in the root dictionary form the first level.
- in the first level contain objects and can contain dictionaries that form the second level.
- in the second level typically contain only objects, but can also contain dictionaries that form the third level, etc.

The number of levels of dictionaries is unlimited.