Used to hold collection of properties.
Properties are user definied properties.
Implements inheritance in forms
Example
In EMP_FORM.fmb Object navigator property class Create General
Name PC1 Functional
Justification Center
Case Restriction Upper
Using property class
In Object Navigator select Ename property palettle Subclass Information select property class radio button property class name PC1
Save.
Program Compile Module
Program Run Form
Observe, value in Ename field, It is centered.
Enter ename in small case, it is appeared in upper case.
Note
A property class in one form, can be assigned to Item in other form.
Object navigator 
