+The ``frame'' quiz has been generalized to non-rectangular shapes.
+
+\end{example}
+
+\separator
+
+\begin{example}
+
+\pic{pics/culture_c_quiz_0078_N4_validated/quiz_01.png}{0078/01}
+
+\pic{pics/culture_c_quiz_0078_N4_validated/quiz_02.png}{0078/02}
+
+More rectangles were added as distractors.