Since this library was written in commuting label mode, examples were
also written in this mode.
Still, the following examples also compile in classic mode without
any modification.

* calendar.ml
* clist.ml
* drawing.ml
* entry.ml
* events.ml
* fifteen.ml
* hello.ml
* image.ml
* radiobuttons.ml
* rpn.ml
* scrolledwin.ml
* testinput.ml