=get vertexdata position z(v)<BR>
  nx#=get vertexdata normals x(v)<BR>
  ny#=get vertexdata normals y(v)<BR>
  nz#=get vertexdata normals z(v)<BR>
  diffuse=get vertexdata diffuse(v)<BR>
  u#=get vertexdata u(v)<BR>
  v#=get vertexdata v(v)<BR>
 next v<BR>
 imax=get vertexdata index count()<BR>
 for i=0 to imax-1<BR>
  vertindex=get indexdata(i)<BR>
 next i<BR>
 unlock vertexdata<BR>
endif
</pre>
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