In Admin>Localization>Order Status, I want to change the name of "Shipped" to "Warehouse" and then I need to change the wording of that email. It currently shows Status:Shipped and I want to change it to Processing as well as make a few other changes that would be more in line with a Processing invoice.

I'm going to use PayPal's "Shipped" invoice because it contains a place for tracking info.

I've tried to find the file by entering some words into the Tool Kit from the current email, but I am not seeing what I need in the results.

I have tried includes/classes/order.php but I can't find anything in there that is right for what I need to do.

Where is this hiding? Suggestions please.