vport — Vectorial Control-rate Delay Paths
ifn - number of the table containing the output vector
ielements - number of elements of the two vectors
ifnInit (optional) - number of the table containing a vector whose elements contain initial portamento values.
vport is similar to port, but operates with vectorial signals, instead of with scalar signals. Each vector element is treated as an independent control signal. Input and output vectors are placed in the same table and output vector overrides input vector. If you want to keep input vector, use vcopy opcode to copy it in another table.