true_extent (Typemap) = true_ub(Typemap) - true_lb(typemap).
An inline equation a = x + b is here.
Another is Typemap = { (type_0,disp_0), ..., (type_n-1, disp_n-1) } , and finally { ( double, 0), ( char, 8) } ,
We close with the remaining recognized commands: a . b = c x d ... e