Doubts in SAP PM module.

Hi Experts ,

Pl provide your valuable guidenence for following ques.

1) Have to send request for quotation. ?

2) Is it possible to delete service PR from maintenance order. If it is created from order due to some problem I want to delete it ,so is it possible ?

3) What is use of long text in maintenance item, Which T code is use for to create long text for maintenance item.

4) What is use of mat profile , ext profile & maintenance profile in maintenance order

5) which is cost receivers in PM

6) What is settlement profile ? how we do partial settlement & 100 % settlement, What is significance of both where we use partial settlement ?

7) How we idea from calibration order there respective UD & Result record done ?

8) What setting need to do in PLM reports.

With best regards ,

AVI DDS.