Alert tokens and functions list

Hi All,

I am creating alert and I am new to it,so having a silly question here.

While creating or adding template to an alert where can I see the tokens and functions that I can use in message body and in recipient list?

I dont see any assistant there from where I can choose AlertUtils functions.

Please share if any detail document is available.

Any help on this much apprecited?

Thanks,

Ananya