Clears an editor widget, reads the contents of a specified text file into the widget, and sets the widget's MODIFIED attribute to FALSE.
Return type: LOGICAL
Applies to: EDITOR widget
If the operation is successful, the method returns TRUE.
In Windows, this method interprets a carriage return character followed by a line feed character as a text line terminator. In all other interfaces, this method interprets a carriage return character as a text line terminator.