This unit implements VCL expression build wizard dialog.
| Name | Base class | Description |
| TRpRecHelp | TObject | Information about functions |
| TRpExpreDialogVCL | TComponent | Component for calling the expression build wizard |
| TFRpExpredialogVCL | TForm | Form of the build expression wizard |
| Declaration | Description |
| function ChangeExpression (formul:string; aval:TRpCustomEvaluator):string; | Function to call the wizard easily |