Deductions & credits

Thank you for your answer. I would like to ask about some statements mentioned in your answer:  

What is "the amount for which treaty benefits are claimed", is it the amount withheld by the employer for the first paycheck before she applies the treaty, or it its the total salary paid by the employer?


Also, statement "subtract this amount from your income to arrive at total income on Form 1040, line 22.". The tax treaty given to my country is unlimited, so which part should I subtract?

Any help please?