Changes

Some Open Source software is used in very technical ways that require integration, configuration, and testing. This can range from using an Open Source operating system (such as a [http://fedoraproject.org Linux] or [http://freebsd.org BSD] distribution) to controlling devices ([http://jmri.sourceforge.net/ model trains]) or setting up enterprise IT (using [http://jboss.org JBOSS], [http://www.apache.org Apache], [http://amqp.org AMQP], and so forth). The distinction between level 2A and 2B is that users in level 2B have a greater understanding of what the software does, and generally configure it to perform a specific task or operate in a specific configuration. The distinction between level 2B and level 3 is that level 2B is still focused on teaching the use of the software (even though at a deeply technical level) while level 3 is focused on advancing the software (through development and related activities).