UI::Dialog a wrapper for various dialog applications

 UI::Dialog is an OOPerl wrapper for various dialog applications.
 These dialog backends are currently supported: Zenity, XDialog,
 GDialog, KDialog, CDialog, and Whiptail. There is also an ASCII
 backend provided as a last resort interface for console based
 dialog variants. UI::Dialog is a class that provides a strict
 interface to these various backend modules.