A free text "Notes" section within each supplier.

It would allow me to enter data such as:
-Delivery free if orders over £XX (and list delivery costs for orders below this value)
-send POs via email
-place orders on XXX (web address)

Some of my suppliers have multiple ordering platforms and which I have to use, depends on the brand I'm ordering...it would be really handy to have a notes section so I can list these details.