When a web site asks for my "PayPal account", is it just the email address I use with PayPal?

I just created a PayPal account because I want to get registered on a web site requiring PayPal. In the registration form on that site there is one field to be filled in: “PayPal account”, but I don’t really know what exactly I am supposed to type in there. Should it be my email address that I gave PayPal while I was registering there (letters from PayPal come to this e-mail box of mine), or should it be something else?