What is meaning of < a href> in title element

Question

https://code.sololearn.com/WSo3YuSB4SxR/?ref=app

Answer 1

https://www.sololearn.com/learn/HTML/1031/

Answer 2

It is not used in title it is used in the head

Answer 3

but why in title element
which is virtual display element

Answer 4

a is used for link tag,
href is used for hyper link reference or to show the source link