Property View of a Component
From Documentation
The Properties view is a tabulated view which lists applicable attributes and its values of a component that you have selected in the Outline view or of a component you have put the cursor on in the ZUL Editor. You can open it by clicking [Window]/[Show View]/[Properties].
Properties of a Window
Using the properties grid you are able to edit the value directly. For some properties with enumeration value (e.g. true/false, normal/none, left/center/right), an informative combo box editor is used to help you input the correct value.