The documentation at the bottom of this page is probably a good start:
There are so many different products in the PATROL product line that it is difficult to find you one definitive document.
Thanks for reply
This is for preparing proposal for the client with Patrol Architecture ,Key features ,Key benifits ,How its working etc.
The solutions iam proposing are BPM Server (Windows),BPM Database(Oracle) (These two documents i have)
Please find below data sheet for Portal, iam looking for something similar to this for PATROL