There has been steady decline in including files with installer.
In early days, it would bring up readme unless you specifically opt-out.
Then later, you have to opt-in to see read me. Now, all things appear to be in doc center.

Now, it looks like when they make change to EULA, you have to agree before downloading,
instead of including files in each download.

In look back, I see that some utilities did include a PDF, but other content I don't see such.

For most content, use is apparent, (i.e., for pose, select figure and dbl-click icon and figure changes).
They think maybe 99.9% people never use such doc, so why includes.