functions in split.i - s

            T   splits tensor tens into  n^p subtensor  
 
    where p = dimsof(tens)(1) and returns  
    a tensor of dimension p+1 where the last index runs alongs  
    the subtensors; works in dimensions 2 to 5.  
interpreted function, defined at contrib/split.i   line 264  

            T   rebuild  tensor tens from  n^p subtensor  
 
interpreted function, defined at contrib/split.i   line 335