This sample data was provided by Keith Refson of the 
Oxford University, to be used with the fast_animate
module on the ftp site.  The text file included with 
this module is included below:

FAST ANIMATE(6)        CONTRIBUTED MODULES        FAST ANIMATE(6)
NAME
     fast  animate  -  AVS  module  to  animate  a  sequence   of
     geometries
SUMMARY
     Name        fast animate
     Type        data
     Inputs      None
     Outputs     Geometry
     Parameters  _N_a_m_e        _T_y_p_e
                 GeomFiles   browser
                 min         integer
                 max         integer
                 cur         integer
                 step        oneshot
                 back        oneshot
                 go          toggle
DESCRIPTION
     The  _f_a_s_t  _a_n_i_m_a_t_e  module  implements  an  animation  of  a
     sequence  of  AVS _g_e_o_m_e_t_r_y files by reading them into memory
     and sending the geometries in rapid succession to its output
     port.   By  storing  the geometries in memory it can achieve
     substantially better animation rates than the use of a _c_y_c_l_e
     object in a script would.  Furthermore the animation rate is
     independent of the length of  the  sequence  until  physical
     memory  is exhausted.  The module was developed for visuali-
     zation  of  molecular   dynamics   simulations   where   the
     geometries are "ball and stick" representations of molecular
     assemblies, but is not restricted to such.
     The module may be in either of two states  called  the  _r_e_a_d
     state and the _r_u_n state which it alternates between. Some of
     the controls have different meanings in the two states.   In
     the  _r_e_a_d  state the _m_i_n and _m_a_x parameters should be set to
     delimit the frame numbers of the geometry files to  be  read
     in,  and  the  name  of  one of the files should be selected
     using the browser.  Pressing the _g_o  button  at  this  point
     will  initiate reading of the whole sequence (which may take
     some time) during which the button will remain  illuminated.
     On  completion  the _g_o button will extinguish and the module
     will change to the _r_u_n state.
     In the _r_u_n state the meanings of the _m_i_n, _m_a_x and _g_o buttons
     change.   _M_i_n  and  _m_a_x  now delimit the range of geometries
     which will be cycled through (which  must  be  a  subset  of

     For sample data to try out this module, see the fast_animate
     directory on the International AVS Center's anonymous ftp site.

Keith Refson          Last change: 20/09/90                     1
FAST ANIMATE(6)        CONTRIBUTED MODULES        FAST ANIMATE(6)
     those  just read in) and _g_o becomes a toggle whose effect is
     to start and stop the animation.  The _s_t_e_p and _b_a_c_k  buttons
     become  active  and  may  be used to single-step through the
     frame in either direction.  Clicking on a  new  filename  in
     the  browser  will return the module to the _r_e_a_d state ready
     to read in a new sequence of files.
PARAMETERS
     GeomFiles
          The sequence of AVS _g_e_o_m_e_t_r_y files is specified using a
          file  browser.   Each file is considered to contain one
          frame. This requires that the files are named according
          to  the  convention  _r_o_o_tnnnn._g_e_o_m  where  _r_o_o_t is some
          arbitrary base filename and nnnn is a  decimal  integer
          (without leading zeros ) indicating the frame number of
          the file.  Clicking on any one of these files will read
          in  the  whole sequence.  What happens is that the file
          name returned by the browser is examined and any digits
          preceding  ._g_e_o_m  are  discarded.  They are replaced in
          turn by a frame number which cycles  from  _m_i_n  to  _m_a_x
          whereupon the corresponding file is read in.
          Alternatively, if the file  name  returned  contains  a
          _p_r_i_n_t_f(_3_S)  format  code such as %_d, %_o or %_x this code
          is used to insert frame  numbers  into  the  file  name
          which  therefore  need not conform to the above conven-
          tion.  A suitable name may be input either by  directly
          typing it in to the browser or by creating a dummy file
          of that name.  This feature may be of  use  to  hackers
          who cannot read decimal notation.
     min and  max
          In the _r_e_a_d state these delimit the range of  files  to
          be  read  in.   In the _r_u_n state they set the limits of
          frames to cycle over.
     cur  This parameter indicates the current frame number.   If
          it  is  altered the sequence number is reset to the new
          value.
     step and  back
          These parameters single-step through frames either for-
          wards or backwards.
     go   In _r_e_a_d mode this button is pressed  to  indicate  that
          the _m_i_n, _m_a_x and _G_e_o_m_F_i_l_e_s parameters are correctly set
          and that reading may begin.  In _r_u_n mode it  starts  or
          stops animation.
Keith Refson          Last change: 20/09/90                     2
FAST ANIMATE(6)        CONTRIBUTED MODULES        FAST ANIMATE(6)
OUTPUT
     geometry
          The output consists of  a  sequence  of  _g_e_o_m_e_t_r_y  _e_d_i_t
          _l_i_s_t_s presented in rapid succession representing frames
          in the animation.  Note that this is a coroutine module
          and is designed to drive a network.
EXAMPLE
              FAST ANIMATE
                   |
             RENDER GEOMETRY
                   |
             DISPLAY PIXMAP
RELATED MODULES
     shrink, offset, render geometry, tube
LIMITATIONS
     Once the total memory of the machine  is  exceeded,  perfor-
     mance becomes very poor due to paging of the X server.  With
     geometry files of approximately 24 kilobytes it  is  reason-
     able to animate 1500 frames in a 64 megabyte machine.
Keith Refson          Last change: 20/09/90                     3