help with teachers code?

I'm trying to evaluate my teachers code. Can anybody tell me what the line of x{ii}(:,1:(ii-1)) =minInt(:,1:(ii-1)) does?

for ii = 2:N+1                                                             %Initializes the for loop. Takes the terms from 2 to the length of N+1. Will run the for loop for each value.
  x{ii} = ones(N+1);                                                     %A statement of the for loop. Says that the cell array of x{ii} is a ones matrix of the size of N+1                                                                                                           
  x{ii}(:,1:(ii-1)) = minInt(:,1:(ii-1));                                %This will take the current values of x{ii}, and in any row, column q 
  x{ii}(:,(ii+1):end) = minInt(:,(ii+1):end);                            %DO THIS LATER  
  P(ii) = det(x{ii});                                                    
%This sets P of the value of ii at the time to the determinate of x{ii} which is defined above.
end

Answer 1

[sixwwwwww]

x{ii}(:,1:(ii-1)) =minInt(:,1:(ii-1))

this line of code is accessing all rows values for columns 1 to ii-1 and then saving them in elememt 'ii' of cell array 'x' in the same matriix form. I hope it explains a bit

Answer 2

[Image Analyst]

See the FAQ for a good explanation of cell arrays: http://matlab.wikia.com/wiki/FAQ#What_is_a_cell_array.3F