The Figure illustrates a page returned from Patent Office (PDF format) with
filing acknowledgement. The returned page may include:
frame indicating scope of received page (area considered to include all
the drawing, text or computer code being sent to PO - info in the margings
outside this frame may be ignored by PO)
time stamp including:
filing date
filing time
patent application number, as was assigned during electronic filing
type of document, this PDF file , for example: Drawings, Text, Claims,
Computer code, Chemical formula, Combined document
page number out of a total of pages
digital signature or Receipt number

The digital signature may refer to the whole document, thus not different
for each page.
The above document is preferably in Acrobat PDF format or another standard
format which may be accepted at the time the method is used.