This is a multiple-value field found in the IndexedFaceSet and IndexedLineSet nodes. MFLong contains any number of long (32-bit) integers.
[ 17, -0xE20, -518820 ]
MFLong fields are written as one or more integer values. These values may be written in decimal, hexadecimal or octal format. As with all multiple-value fields, when more than one value is present, all values must be enclosed in square brackets and separated by commas.
Example Use
The following code fragment is from Allnodes.wrl.
IndexedLineSet {
coordIndex [ 0 ]
materialIndex [ -1 ]
normalIndex [ -1 ]
textureCoordIndex [ -1 ]
}