The required attribute specifies whether a response is required for a given survey item.
<checkboxes> <dropdown> <listbox> <openended> <radiobuttons> <slidertrial> <textbox>
boolean | A boolean value of true or false. |
The following radiobutton survey item requires the respondent to select one of the options:
<radiobuttons q1>
/ options=("true", "false")
/ caption="I sometimes think I would like to be a forest ranger."
/ required = true
</radiobuttons>