Activity file created by Hot Potatoes, a software suite used to make and share online quizzes; contains a jumbled-sentence exercise; includes hints that the student can use for help in solving the problem.

The JMX file allows you to specify as many different correct answers as you desire depending on the words and punctuation in the original sentence. Hot Potatoes includes the JCross, JCloze, JQuiz, JMatch, JMix, and Masher utilities that can create different activities. Each utility creates an activity with a different file extension, such as the .JQZ and .JMT extensions created by the JQuiz and JMatch programs. NOTE: In 2009, the software was released as freeware.