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.
Not that any of this has anything to do with the value of VHS Disney movies (sorry), but: Oops! The next Platinum Edition release (in February) will be Lady and the Tramp, with The Little Mermaid following in October of next year.