Using memoir class

[Rich Shepard]

If you've used the memoir class for a book please share your knowledge with
me.

Since there are no front matter environments for half-title or copyright
pages (but there is one for abstract which is found on articles, not books)
I need to learn how to define the first two.

Reading Peter Wilson's sample title page documents I've decided on his
\titleM design. He provides the code. But TeXLaTeX2023 does not inclue that
style. Do I copy the code into the book's preamble?

These two are the only issues for which I've not yet found solutions and I
would like pointers on how to apply them to my book.

TIA,

Rich