# type  menu/item     operation/parent  label                                        command/menu            activation          install?
menu    dccvMenu      topMenu           ""                                           ""                      ""                  ""
item    dccvMenu      command           "Collect responses..."                       dccvCollectResponseSet  ""                  "packageAvailable('DCchoice')"
item    dccvMenu      command           "Fit model..."                               dccvModel               "activeDataSetP()"  "packageAvailable('DCchoice')"
item    dccvMenu      command           "Calculate confidence intervals for WTP..."  dccvWtp                 "dccvModelP()"      "packageAvailable('DCchoice')"
item    dccvMenu      command           "Draw survival function..."                  dccvPlot                "dccvModelP()"      "packageAvailable('DCchoice')"
item    topMenu       cascade           "DCCV"                                       dccvMenu                ""                  "packageAvailable('DCchoice')"

