ActionFilterAttribute is a hybrid abstract class that implements an Attribute, an IActionFilter, and an IResultFilter. It can be inherited to implement a custom attribute that provides a declarative means to add pre-action and post-action behavior to controller action methods.

The fragment-identifier is the part of the URI/URL following the hash symbol. In the case of `http://mysite.com/page/#/one` then `/one` would be the fragment-identifier.

"Hotswap" or "Hotswapping" refers to dynamically replacing a class implementation during the runtime of an application.

Kanban is a method for developing software products and processes with an emphasis on just-in-time delivery while not overloading the software developers. **Please note:** This is exclusively for programming questions; methodology questions should be directed to Software Engineering SE, and project management questions should go to Project Management SE.

An application or API that understands and parses PDF syntax allowing the manipulation or inspection of the objects contained in the PDF.

Web site or blog content that changes frequently and engages the reader. Dynamic content can include animations, video or audio. Tho opposite of 'static content'.

An "rc" file is a file read at startup of a program. It is also the name of the Plan 9 Shell.

Factory Method is a creational design pattern published by the Gang of Four. Its intent is to, "Define an interface for creating an object, but let subclasses decide which class to instantiate. Factory Method lets a class defer instantiation to subclasses." (page 107) Note that [abstract-factory] is a separate GoF pattern, and there are additional [factory] patterns outside the GoF.

When a device is locked, it needs to be "reactivated" in order to use it. This unlock is normally obtained by pressing a button and/or swiping a finger across the screen.