Matrix 
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This method calculates a matrix, based upon the nodes in NL. Eventually set extra = true for use with TTSP  see explanation in TTSPmode.
Set symmetric = true, if you can do with a symmetric matrix. This makes calculations faster. But it is not recommended if you have oneway restrictions in the network.
If you want to do a N x M matrix rather than N x N, use Matrix2.
Syntax: Matrix(NL: TIntegerList; extra,symmetric: boolean): TMatrix
