Printer configuration question.?

both, bi-directional support lets your printer "talk" to the computer. error messages, ink status, etc. Spooling allows your print(if it has memory) or computer to store up the data to be printed. that way, it doesn't bog down the computer while it's printing. there's different setting for spooling. you can have it wait till it's done completely spooling before printing, print after the first page is spooled or print immediately. it depends on your computer and what you're comfortable with.