For issues that are specific to Python 3.3. Use the more generic [python] and [python-3.x] tags where possible.

Windows Explorer is the file manager and navigation tool that exists in Microsoft Windows operating systems

Digital Imaging and Communications in Medicine (DICOM) standard defines formats for storing and communicating medical images. Non-programming specific questions about DICOM are off-topic for Stack Overflow. For questions related to a specific tool-kit, use a more specific tag in addition to, or instead of, this tag.

Questions about programming software agents or programming in an agent-oriented environment.

Tkinter Entry refers to a type of widget used in Tkinter (a Python standard GUI package), called the Entry widget, used to enter or display a single line of text. Not to be confused with the Text widget which is used to enter multiple lines of text. Use this tag for questions related to the Entry widget.

Virtual memory is a memory management technique developed for multitasking kernels.

In Object Oriented languages, derived class can inherit properties and/or member functions from a base class, also called super class. cf inheritance and polymorphism.

A refinement of the more generic frontend tag. In a web application this usually means HTML, CSS and JavaScript

Directed acyclic graphs appear in many data structures such a changeset graphs in distributed version control systems.

MediaCodec is a class from the package "android.media" of Android API that can be used to access low-level, native media codec, i.e. encoder/decoder components.

SWI-Prolog is an open source implementation of Prolog that runs on Unix, Windows and Mac.