%!demo
%! ## `size` reports `[height, width]` — rows by *variables*.  A variable that
%! ## spans several columns still counts as one, so the second element matches
%! ## `width`, not the total number of underlying columns.
%!
%! Age = [38; 43; 38; 40; 49];
%! BloodPressure = [124, 93; 109, 77; 125, 83; 117, 75; 122, 80];
%! T = table (Age, BloodPressure)
%! size (T)
%!
%! ## Query a single dimension, or capture both at once.
%! nRows = size (T, 1)
%! [nRows, nVars] = size (T)
