Create a tree representing an operation
op=Operation(operator,operands,out)
:operator operator symbol (character string) : :operands list of operands (list of “M2SCI tlists”) : :out list of outputs (list of “M2SCI tlists”) : :op an “operation” tlist :
This function create a tlist representing an operation when using M2SCI. All input parameters values are verified to be compatible with “M2SCI tlists”.