Halograph vs Autograph - What's the difference?

As a noun autograph is

a person’s own handwriting, especially the signature of a famous or admired person.

written in the author’s own handwriting.

to sign, or write one’s name or signature on a book etc.

Halograph has no English definition. It may be misspelled.

(wikipedia autograph)

(en noun)

A person’s own handwriting, especially the signature of a famous or admired person.

A manuscript in the author’s handwriting.

* signature, inscription * original

(-)

Written in the author’s own handwriting.

(en verb)

To sign, or write one’s name or signature on a book etc

To write something in one's own handwriting