# Classification

## How to Suppress the Inheritance of Attributes

| ### What to do:
| To work through this example, you must have completed the examples Create a Class and Assign Attributes to a Class.
| By suppressing the attribute inheritance , the attribute is deleted from the level below. Thus suppressed attributes in the lower levels are also deleted. This is not re-created when the suppression on the higher level is reset.
| In our class hierarchy example, the following hierarchy (structure) must be defined:
| Select Start > Classification > Classes. The Classes mask is opened.
| Find the class CLS-1100 Wood screws.
| Activate the Class List tab. The classification list is opened. On the right-hand side of this list, the KF and L attribute fields are displayed. (You may have to enlarge the list view or scroll to the right.). The L attribute has been inherited from the CLS-1000 Bolts class to the CLS-1100 Wood screws subclass.
| Click on the Attributes tab.
| Select the data record with the Length attribute and click .
| Select the checkbox in the Suppressed column.
| The field name Suppressed is usually not displayed completely (Sup...). You can display the whole name by enlarging the column size.
| The checkbox has three modi: inactive (), active () and empty (). Empty corresponds to the inactive mode.
| To save the entry click .
| Confirm the following query with YES.
| Click on the Class List tab. In the Classification list only the attribute column KF is still displayed. The attribute column L of the superclass is suppressed.