How to set one word name and leave empty last name in Google Mail?

How to set one word name and leave empty last name in Google Mail?

Issue
I discovered only indirect answers, so I attach a direct question and answer.
For some services is useful to have one name in the email header. When you
create email account Google by default does not allow to leave the name
field empty.
Solutions
1) Easy - login to Google Mail > open links "Settings > Accounts > Send
mail as > edit info" > change field "Name" to one word > Save Changes.
2) Hard way or if you want empty both names - login to Google Apps Admin >
open links "Users > choose user > Rename >" put special char "lrm" from
"Char map" U+200E to "Last name".
Indirect sources
Does my name get sent along with my email?
How can you change how your Gmail account name appears?
http://chris.calabrese.org/?p=271