x_choices — interactive Xwindow choices through toggle buttons
rep=x_choices(title,items)
vector of strings, title for the popup window.
a list of items items=list(item1,...,itemn), where each item is also a list of the following type : item=list('label',default_choice,choices). default_choice is an integer which gives the default toggle on entry and choices is a row vector of strings which gives the possible choices.
an integer vector which gives for each item the number of the selected toggle. If user exits dialog with "cancel" button rep is set to [].