I'm a web programming newbie. When it comes to URLs, it is my understanding that parameters can be passed in the URL itself using the syntax like the following

```
http://mywebsite.com/mypage?params=stringified_list_of_paramaters

```

I'm confused because the URL I'm looking at looks like this

```
http://website.com/page?params=stringified_list_of_paramaters&stoken=01234567

```

So, is "stoken" a keyword? Aren't tokens usually sent in a header?