ng |score| on two symktensor converts the symktensors to ktensors 
% and calls the |score| function for ktensor. See the |ktensor/score|
% documentation for more information.
%% Subscripted reference for symktensors
% After defining a symktensor, one can reference its weight vector, factor
% matrix, or element using the following conventions. Note that elements
% are queried using multi-dimensional subscript notation, as opposed to
% linear.
S.lambda %<REPLACE_WITH_DASH_DASH The weight vector
S.X %<REPLACE_