  COMMAND PWAVE1DFRAME
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    Purpose: transversal/longitudinal particle-wave along x-axis, single object
      Usage: PWAVE1DFRAME(<particleID>,<frames>,<frame>,<destID>,<"T" or "L">,
             [<amplitude>,<wavelength>,<source>,
             <damping>,<phase in degrees>])
   Examples: pwave1dframe(1,40,33,2,t,12.0,24,0,1.0,0.0)
             pwave1dframe(1,33,12,5,t)
             pwave1dframe(1,33,12,6,l)
