Which of the following is NOT a valid value to activate a button or a link?

• A. X
• B. {Click}
• C. CLICK
• D. {ENTER}

Answer: (C)

Activation of a button or link in Tosca recognizes a small set of value formats. You can either supply a single character that matches the control’s visible label, or use a Tosca action token in braces to perform the action (for example {Click} to click the control or {ENTER} to press Enter). A plain uppercase value such as CLICK isn’t recognized because it doesn’t correspond to a brace-enclosed action token and isn’t guaranteed to match the control’s literal label. Therefore it isn’t a valid activation value, while X and {Click} and {ENTER} are valid.