set messagelocation= { statusbar | messagebox | either}

This command controls where error messages are displayed in the Arbortext Editor interface. When set to statusbar, error messages are always displayed in the status bar. In this case, messages will be truncated if necessary. When set to messagebox, error messages are always displayed in a separate message window. The default is either, which means to display error messages in the status bar if they fit, or in a message window otherwise.