This is a multiple-value field found in Coordinate3 and Normal. MFVec3f can contain any number of three-dimensional vectors.
[ 0 0 0, 1.2 3.4 5.6, 98.6 -4e1 212 ]
The MFVec3f field is written as one or more triplets of floating point values separated by white space. Again, as with other multiple-valued fields, when more than one value is present, all of the values are enclosed in square brackets and separated by commas.
Example Use
The following code fragment is from NoName_4.wrl.
Coordinate3 {Point [-1.000 -1.000 0.000,-1.000 1.000 0.000,1.000 -1.000 0.000,1.000 -1.000 0.000,0.000 0.000 1.481,]}