True/False variables are useful in controlling content and entering in information based on different conditions, such as in the Married example above in the Basic Definitions section under Instructions. True/False variables have the following options:

Intake style: You can choose whether the user selects a check box (the default), toggles a yes/no switch, or selects between yes/no radio buttons.

Default value: You can choose whether True/False values are initialized as true or initialized as false. Knackly's default is that True/False values are initialized as false (i.e., all True/False values are false until they're selected as true by the user), but you can use this option to change that.