Changes

===Create Creating a collection===

With BaseX you can group documents into one logical collection.A collection is a database that contains two or more documents.You can put Collections accept any type of XML documents into the collection, regardlessof their structure.

Now we will Let's add the xmark.xml document to the factbook database,and thus to create a collection. The collection will keep name of the name original factbookdatabase remains.

* First make sure factbook is opened::<code>: > open factbook

* Now add the xmark.xml document: :<code>: > add xmark.xml