To test flexor digitorum superficialis, one finger is flexed at the proximal interphalangeal joint against resistance, while the remaining three fingers are held fully extended (to inactivate flexor digitorum profundus).
Because we are too, obviously. Today Pixar Animation Studios announced updated release dates for each movie, so here they are so you can mark your calendars accordingly: The Incredibles 2 will come out June 15, 2018 and Toy Story 4 will come out June 21, 2019. Toy Story 4.
The film was so successful it prompted two sequels, Toy Story 2, which was released November 24, 1999 and became an even bigger hit than the original (Toy Story was re-released on a double feature with Toy Story 2 in 3D on October 2, 2009) and Toy Story 3, which was released June 18, 2010.