I can read how to create a content block but on my version 4.0sp1 I don't see this possibilty (please see printscreen at attachment)
Where is the type of content for content block?
Posted by Community Admin on 28-Mar-2011 00:00
ContentBlock is a widget and not type of content. It is actually a completely unstructured content that you can put anywhere on a page. Therefore, it is not located under the Content menu in Sitefinity.
In order to use ContentBlock, please do following:
Create a new page
Open it in the page editor
In the toolbar, under the "Content" section, locate the ContentBlock widget and drag it on the page (see attached screenshot).