when making any paypal transaction, it would be most helpful to be able to add a personal reference for example "reference project 1". then later it would be easy to call up all transactions with this reference . Also , within that catagory to give a meaningful name to each item.
In practice, this would be done at checkout with a dropdown box for existing or new project / catagory. and a text entry box for a given name for the transaction.
This idea if adopted, would simplify my banking and record keeping and would probably mean I would use paypal for many more transactions than I do at present.