The radiolist box (radiolist)

If you want the user to select only one option out of many choices, then radiolist is a suitable option:

# dialog --radiolist  "This is a selective list, where only one  
option can be chosen" 10 50 2  
"a" "This is the first option" "off"  
"b" "This is the second option" "on"

Radio buttons are not square but round, as can be seen in the following screenshot:

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