Are initials legal legal if not your actual initials?

Wills are changed by executing a codicil. A codicil is drafted in the same form as a will and must explain the changes or corrections clearly. It must be signed by the testator, witnessed and...

I don't know the context of this, but TR could stand for Trustee.

mixed up payees on two check, sheriff was to get 5.00 fee, clerk 13.00 fee, so changed the payees and initialed the change. Court accepted the 13.00 changed-payee, for clerk, sheriff rejected it. I...

you cant sign someone elses name.

Federal law, which trumps state law, says no. So if your state allows it, that doesn't matter, the country does not.