Windows Universal apps target multiple types of devices via a single codebase. Please specify with other tags if you refer to Windows 8.1 or Windows 10.

Interoperability is a requirement for one computer system or programming language to work with another.

WPF controls include UserControls, which are composite collections of other controls, and CustomControls, which are controls built with WPF styles and templates.

The act of saving one's files, data, applications, etc. to secondary media, allowing for the recovery of the files, data, applications, etc. in the event that the primary media becomes unavailable (fails). Also the secondary media used for storage.

A border is a graphical user interface construct that is used to surround and/or highlight something that is contained within.

Coordinate and other transformations. You probably want a more specific tag like [css-transforms].

Please use this tag in relation to ExtJS 4.0 - 4.2; Ext JS 4 is the fourth major version of the JavaScript library for building Rich Internet Applications (RIA), and now includes an MVC architecture without the need to use plugins. Sencha has already released ExtJS 4.1 which has some significant changes compared to the last stable 4.0.7 release.

Optical Character Recognition, usually abbreviated to OCR, is the mechanical or electronic translation of scanned images of handwritten, typewritten or printed text into machine-encoded text. The following topics, although some being distinct fields of application, are also commonly referred to as OCR: Handwritten Text Recognition (HTR), Optical Word Recognition (OWR), Intelligent Character Recognition (ICR), Intelligent Word Recognition (IWR).

A textual macro processor applied before compiling C and C++ language programs. This tag can also be used for questions about other compilers/languages derived from or that have identical features, such as the #directives in Objective-C or C#.

A formula is a mathematical equation or expression that performs various operations on variables to produce an outcome.

Simple function outputting text. Exists in script languages.