wat is a preface raisa answer this ques or any expert plz it is urgent

Your query is incomprehensible to us. If you intend  to ask about the definition of a preface then, the answer is given below:

A preface is an introduction to a literary text written by the author of the text.

If you query implies something else then, please elaborate your query so that we may help you suitably. Thank you for your cooperation.