Pen, Paint, and Pretzels, the umbrella organization for student-run performing arts groups at Tufts University, presents the third and final performance of William Shakespeare’s “A Midsummer Night’s Dream,” its fall workshop production. Directed by Eli Morton and stage managed by Lila Rhee. Admission is free, but seating is limited and and first-come, first-served; doors to the Curtis Hall Multipurpose Room open 20 minutes prior to show time.