# Default elements for URL filtering

There are default elements for the categories you can use in category-based URL filtering and for creating custom lists of URLs.

- URL Category elements represent the categories for category-based URL filtering.
- URL Category Group elements contain several related URL Categories.
  You can find these elements under Network Applications > By Type > URL Category Group in the element tree.
  Note: The URL Categories and URL Category Groups are predefined. It is not possible to add or edit URL Categories or URL Category Groups.
- URL List Application elements allow you to manually define lists of URLs. You can find these elements under Network Applications > By Type > URL List in the element tree.

## URL Category Properties dialog box

Use this dialog box to view the properties of URL Category and URL Category Group elements.

Option | Definition
--- | ---
Name | Shows the name of the element. Not editable.
Comment | Shows a description of the category or category group. Not editable.