The Unified Modeling Language has quickly become the de-facto standard for building Object-Oriented software. This tutorial provides a technical overview of the 13 UML.
error codes are values that identify different types of errors in the Windows API. Most functions do not report the error code directly; instead, they simply return a flag specifying if some error occured or not.
Blind compliance to authority. This should be a case study for psychologists, a wake up call to the education system and force a reflection about society. This was put into a movie Compliance (2012) and is covered in Wikipedia's article (http://en.wikipedia.org/wiki/Strip_search_prank_call_scam).