1.

• You can delete attached document:

• You can add new file with function Add.
• Knowledge / Documents / Documents you can manage all attachments.

2.

• If you want to change company's reports header and footer: in OpenERP Settings / Companies / Companies - open company and you can change header and footer in page Header/Footer for all reports.

• If you want to change report's design, then read: http://doc.openerp.com/v6.1/developer/05_reports.html#openoffice-org-reports

To modify header and view of automatically-generated OpenERP Report,

You should modify the .rml files.

You can find them in /addons/sale/report/sale_order.rml

Instead of hard-coding the rml, you are able to modify it more comfortably by using OpenOffice then save it to .sxw.

Later, you will have to access /addons/base_report_designer/openerp_sxw2rml/openerp_sxw2rml.py to convert .sxw file to .rml file

Files which are important for reporting :

1. /addons/sale/sale_report.xml
2. /addons/sale/report/sale_order.rml
3. /addons/sale/report/sale_order.sxw
4. /addons/sale/report/sale_order.py
5. /addons/sale/report/__init__.py

Don't forget to make sure this constrain

1. On /addons/sale/__init__.py : import report