1, the original text: "Borrow 8,000 yuan for repayment today, and pay it off in full before 2008 1", and the proposal is changed to: Zhang Ling has borrowed 8,000 yuan, and Zhang Ling promised to pay it off in full before 2008 1 month 1.

2. The full text of the IOU should be written by Zhang Ling. Don't print out the signature, because most signatures with only two words can't recognize the handwriting.

3. Write with a pen or signature pen.