The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/10/static/index.html
Description:
right off the bat, you should have this kind of explanation up there in
chapter 1:
https://www.liquidweb.com/kb/what-is-the-default-password-for-postgresql/
this will orient any noobs immediately.
also, the word "role" and "user" should not be used interchangebly. they
mean different things.