Release 10.1A: OpenEdge Development:
Progress Dynamics Advanced Development

> ## Modifying visual properties at the master and instance levels

> When you first edit the `customerviewv` viewer and test it in your window, note that some of the fields have a button on the right containing an ellipsis (…). This button brings up a pop-up object to calculate a value for the field. Generally, by default all numeric fields have a Calculator pop-up, and all date fields a Calendar pop-up. If you want to turn this off for a field like the `CustNum` because it is not appropriate for that field, you can do this globally by changing that property in the DataField object. Because of the inheritance model in Progress Dynamics, that property setting for the master field-level object is inherited by all uses of that field in viewers and other objects unless it is specifically set otherwise.

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