# Object Property Reference

This chapter is an overall introduction to the properties of objects in JReport Designer. Keep in mind the following while browsing each object for its properties:

- You will start off from a table listing all the properties for an object and what can be achieved with each property.
- Some properties are just used to show related information and cannot be edited.
- Some properties can be controlled by a formula. Also, some properties must be known by JReport Engine before page break, so that it can lay out the object. In a formula, the special field PageNumber is the switch for turning on and off the page break calculation time. If PageNumber is quoted in the formula, then the calculation time will be after page break and vice versa. For this reason, JReport will set the calculation time for controlling by whether the formula will be marked as before page break or not. If otherwise (no mark), the property can be controlled by formula at any time.
- For properties with a hyperlink, you can find further explanation. The same property for different objects usually means the same thing, unless otherwise stated.

Note: When you hover the mouse on any property in JReport Designer, a tip will be displayed showing a brief description about the property. You can click on the tip to open the corresponding help doc or click to close the tip. If you do not want to display the property tips, uncheck Show tips in the Options dialog (File > Options > General > Show tips).

This chapter explains the properties shown in the Report Inspector and Catalog Browser respectively:

- Properties in the Report Inspector
- Properties in the Catalog Browser