Block Types
There are three different Block types that have completely independent funcitonalities:
PHP Block
This block usually calls a function that is provided by a plugin or standart functionality of geeklog. The name of the php function is entered in the "Block Function:"-Field, withouth any "()" or ";" at the end.
These blocks can provide a very large variety of functions, only depending on the function used.
Portal Block
The Portal Block is diplaying an RSS/RDF feed. The content can not be changed since it is completely determined by the content of the RSS/RDF file. For a new block, at least the complete URL of the RSS/RDF-file has to be given.
Normal Block
The Normal block usually is a simple HTML-text, that can contain announcements, links and even advertising. It can be used as a Navigation-tool and link to static pages as well as external sites.