H Also converts to a tensor.
%% Use double to convert a ttensor to a (multidimensional) array
double(X) %<REPLACE_WITH_DASH_DASH Converts to a MATLAB array
%% Use ndims and size to get the size of a ttensor
ndims(X) %<REPLACE_WITH_DASH_DASH Number of dimensions.
%%
size(X) %<REPLACE_WITH_DASH_DASH Row vector of the sizes.
%%
size(X,2) %<REPLACE_WITH_DASH_DASH Size of the 2nd mode.
%% Subscripted reference to a ttensor
X.core(1,1,1) %<REPLACE_WITH_DASH_DASH Access an element of the core.
%%
X.U{2} %<REPLACE_