It is not only third person pronouns which work in this way.
Still, most choose to use third person pronouns to be safe.
The first and second person pronouns are independent of the noun class system.
In this instance, it can replace the third person singular independent pronoun.
Nothing in this character indicates the idea of "third person singular pronoun."
There is no emphatic form for third person personal pronouns.
Bokmål, like English, has two sets of 3rd person pronouns.
The object language is already taken to contain attitude operators and the first person pronoun.
It is a variant of the third person pronouns that were declined earlier.
The third person pronouns depend on noun class, as explained above.