Found the following significant warnings:
  Rd warning: cutrgl.Rd:30: missing link ‘par3d’
  Rd warning: cutrgl.Rd:30: missing link ‘open3d’
  Rd warning: cutrgl.Rd:30: missing link ‘material3d’
  Rd warning: cutrgl.Rd:36: missing link ‘plotdev’
  Rd warning: cutrgl.Rd:42: missing link ‘material3d’
  Rd warning: cutrgl.Rd:42: missing link ‘par3d’
  Rd warning: imagergl.Rd:115: missing link ‘contour2D’
  Rd warning: imagergl.Rd:122: missing link ‘colkey’
  Rd warning: imagergl.Rd:136: missing link ‘persp3D’
  Rd warning: imagergl.Rd:160: missing link ‘perspbox’
  Rd warning: imagergl.Rd:173: missing link ‘image3D’
  Rd warning: imagergl.Rd:173: missing link ‘contour3D’
  Rd warning: imagergl.Rd:175: missing link ‘scatter3D’
  Rd warning: imagergl.Rd:175: missing link ‘arrows3D’
  Rd warning: imagergl.Rd:189: missing link ‘image3D’
  Rd warning: imagergl.Rd:189: missing link ‘contour3D’
  Rd warning: imagergl.Rd:189: missing link ‘scatter3D’
  Rd warning: imagergl.Rd:189: missing link ‘segments3D’
  Rd warning: imagergl.Rd:190: missing link ‘text3D’
  Rd warning: imagergl.Rd:190: missing link ‘arrows3D’
  Rd warning: imagergl.Rd:193: missing link ‘image2D’
  Rd warning: imagergl.Rd:193: missing link ‘contour2D’
  Rd warning: imagergl.Rd:193: missing link ‘scatter2D’
  Rd warning: imagergl.Rd:193: missing link ‘segments2D’
  Rd warning: imagergl.Rd:194: missing link ‘text2D’
  Rd warning: imagergl.Rd:194: missing link ‘arrows2D’
  Rd warning: persp3Drgl.Rd:27: missing link ‘persp3D’
  Rd warning: persp3Drgl.Rd:27: missing link ‘ribbon3D’
  Rd warning: persp3Drgl.Rd:27: missing link ‘hist3D’
  Rd warning: persp3Drgl.Rd:31: missing link ‘scatter3D’
  Rd warning: persp3Drgl.Rd:31: missing link ‘points3D’
  Rd warning: persp3Drgl.Rd:31: missing link ‘lines3D’
  Rd warning: persp3Drgl.Rd:31: missing link ‘segments3D’
  Rd warning: persp3Drgl.Rd:35: missing link ‘slice3D’
  Rd warning: persp3Drgl.Rd:35: missing link ‘slicecont3D’
  Rd warning: persp3Drgl.Rd:35: missing link ‘isosurf3D’
  Rd warning: persp3Drgl.Rd:35: missing link ‘voxel3D’
  Rd warning: persp3Drgl.Rd:38: missing link ‘surf3D’
  Rd warning: persp3Drgl.Rd:38: missing link ‘spheresurf3D’
  Rd warning: persp3Drgl.Rd:41: missing link ‘box3D’
  Rd warning: persp3Drgl.Rd:41: missing link ‘border3D’
  Rd warning: persp3Drgl.Rd:41: missing link ‘rect3D’
  Rd warning: persp3Drgl.Rd:73: missing link ‘perspbox’
  Rd warning: persp3Drgl.Rd:87: missing link ‘plotdev’
  Rd warning: plotrgl.Rd:25: missing link ‘material3d’
  Rd warning: plotrgl.Rd:30: missing link ‘par3d’
  Rd warning: plotrgl.Rd:30: missing link ‘open3d’
  Rd warning: plotrgl.Rd:30: missing link ‘material3d’
  Rd warning: plotrgl.Rd:50: missing link ‘arrows3D’
  Rd warning: plotrgl.Rd:58: missing link ‘scatter3D’
  Rd warning: plotrgl.Rd:35: missing link ‘material3d’
  Rd warning: plotrgl.Rd:35: missing link ‘par3d’
  Rd warning: plotrgl.Rd:38: missing link ‘plotdev’
  Rd warning: plotrgl.Rd:42: missing link ‘persp3D’
  Rd warning: plotrgl.Rd:42: missing link ‘scatter3D’
  Rd warning: plotrgl.Rd:42: missing link ‘arrows3D’
  Rd warning: plotrgl.Rd:42: missing link ‘slice3D’
  Rd warning: plotrgl.Rd:42: missing link ‘surf3D’
See ‘/home/hornik/tmp/R.check/r-patched-gcc/Work/PKGS/plot3Drgl.Rcheck/00install.out’ for details.