i cant understand


(Guest)

When i was reading today auditing from notes of Surbhi Bansal (chapter name - some accounting principles, short note name 'deperciation') i read the following lines.

"SINKING FUND IS USUALLY CREATED TO RETAIN THE AMOUNT OF DEPRECIATION CHARGED IN THE PROFIT AND LOSS ACCOUNT".

So my question is what is the meaning of the above sentence? Explain me please.

Thank you very much to everyone whosoever replies me.