3.2.2 Specifying titles directly

You can specify a title directly to all CAPI panes, using the :title keyword. This is much easier than using title-panes, since it does not necessitate using a layout to group two elements together.

Any class that is a subclass of titled-object supports the :title keyword. All of the standard CAPI panes inherit from this class. You can find all the subclasses of titled-object by graphing them using the class browser.

3.2.2.1 Window titles

3.2.2.2 Titles for elements

CAPI User Guide (Unix version) - 30 Aug 2011