Thanks for responding to my question and for your time, etc.
I was aware of `align` but as far as I am aware it is orthogonal to what I'm asking about. The Andrei book says that D automatically rearranges members of `class`s in memory to avoid wasting memory due to padding between members whose width is less than the native CPU word size alignment, whereas `struct`s are left as is (meaning the members aren't reordered for alignment padding optimization).
The `align` command specifies alignments but doesn't seem relevant to automatic rearranging of members for classes.
I'm not sure if D does that or not anymore, since (as you said) it has been a long while since that book was published.
