Indicates whether the AVM automatically centers the frame in a window.
Data type: LOGICAL
Access: Readable/Writeable
Applies to: FRAME widget
The default value for this attribute is FALSE. When you set this attribute from FALSE to TRUE, the values of the COLUMN, ROW, X, and Y attributes for the frame change to reflect the new location of the frame. Setting the CENTERED attribute from TRUE to FALSE has no meaning and results in an error message.