I've read the section in the Developer's Guide (5.5 r2) about Wildcard URLs but I need a clarification.

I have a url:

http://localhost/abc/Encyclopedia/Content.aspx?ContentTypeID=90&ContentID=x01682

In the Path section of the document properties I've created the Document Alias: /Encyclopedia/Content/{ContentTypeID}/{ContentID}

but this only works if I manually create a new Document alias in the Document aliases section of Document properties (by clicking "Add new alias").

1. Is that how it's supposed to work?
2. What is the difference between the two different document alias sections in the document properties? I read the help but it wasn't clear to me.

It would be nice to have an example with two query string variables in the documentation.

Thanks,
Scott