x_message — X window message
[num]=x_message(strings [,buttons])
vector of characters strings to be displayed
character string or 2 vector of character strings which specifies button(s) name(s). Default value is "Ok"
number of button clicked (if 2 buttons are specified)
for displaying a message (diagnostic,... ) and waiting for an answer (button click). The function returns only after a click on a button.