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The positions, velocities, and accelerations of all the bodies and specified points can now be found,
using various 'interrogation' routines. Following a call to a subroutine which ‘advances the clock’,
the behaviour of the mechanism can be recalculated at another point in its cycle.
Each new body which is created is given a 'type', as shown in Fig. 2. As can be seen, these types
have various numbers of 'tags' (shafts or holes) which can be joined to appropriate tags on other
bodies.
Figure 2: Standard body types
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