Some elements carry additional information in the form of attribute values. The Attributes tab of the element manager shows the current attribute values of the element that contains the insertion cursor.

Attribute values can be modified by editing the appropriate field in the Attributes tab of the element manager. If an attribute is restricted to a set of possible values, these values are shown as a drop-down list in the Attributes tab of the element manager. If an attribute value may be freely entered, an entry field is made available for entering the value.
To edit the attribute values of an element, follow these steps:
Editing attribute values
Place the insertion cursor inside the element in question.
Click on the title of the Attributes tab in the element manager. The list of attributes and attribute values of the current element is displayed.
Click on the attribute in question. The entry field or the drop-down list for the attribute value becomes active.
Edit the attribute value by typing or by selecting the appropriate value from the drop-down list.
After editing or selecting the attribute value, press the Return key to accept the new value.
You can delete an attribute value by pressing the button at the bottom of the element manager.
Note: There is a difference between deleting an attribute value and setting the value of an attribute to an empty string. In the first case, the element still has the attribute, but the value of the attribute is empty. In the second case, the attribute is undefined for the element in question.
Please refer to The Attributes Tab for more details about the Attributes tab of the element manager.