Click the Fill tab to specify the color which is to fill the object, and the level to which the object will be filled. The fill properties can change dynamically, depending on the return of an expressionA statement (or group of statements) that returns a value. An expression can be a single variable, a mathematical formula, or a function., or the state of a tag etc. (for instance, you could use this tab to visually reflect tank levels).
The check mark to the left of the Fill tab tells you when a Fill property has been configured. The check marks in the tabs down the right of the dialog indicate which property is configured.
Click the other tabs to define more properties for the object. Most properties work together, for example, an object could possess color fill, movement, and scaling properties simultaneously.