Describe the Curve (aka follow the arc): Follow a path of action. See 'Arc'
Dope Sheet (proper name: Exposure Sheet. aka: X Sheet or Worksheet): Chart used by Director and Animator to time out action, identifying the numbering of the animation and giving all instructions relating to action planning, animation levels, camera moves, exposures, etc. There is one Dope Sheet for each 'shot or scene'.
To Dope: To enter information on to a 'dope sheet'.
Double bounce: In a normal walk cycle, there is only one pose per step in a downward position. For a double bounce, there are two down poses per step which gives a syncopated type of movement. (e.g. Mickey Mouse.)
Extremes (see 'Keys')
Facility House: Post-Production Company
Fettling: Trimming and making seams on models or puppets after the moulding process.
Doubles (aka Twos): Creating one image to be exposed for two frames of film. The standard way of working for good drawn animation. See 'Singles' for examples of when not to use Doubles.