Where is the transmission dipstick on a 1996 Nissan Truck?

== == if it's a manual transmission there isn't one????????/

On my '93, it is underneath the air filter. At first, I needed to pull the air cleaner off to get to it, but now that I'm more familiar with it, I can check it more quickly. On my 96 manual trans you have to remove a plug on left side of trans below vehicle. Upper plug is fill lower plug is to drain. Fill till it overflows, then it's correct level. Don't know why manual transmissions never use dipstick??? mystery to me.