By default, messages boxes have an OK push button. If you specify a name for the helpFilename: parameter when defining a message group, the message box will also have a Help push button. To customize the push buttons that appear, code an expression like:
return := (self getMRI: MsgSelect group: #AddressMsgs) displayButtonType: buttonType.
where buttonType is one of the following:
To change buttons and do parameter replacement, use the displayButtonType:replace: message.