Check if a question is required
This function is for internal use. It will check if a question in the user-supplied questions dataframe is required. If so, it will add the label with an asterisk. If not, it will just return the label.
addRequiredUI_internal(df)
df |
One element (a dataframe) in the list of unique questions. |
A label with or without an asterisk to signify it is required.
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