According to the standard, "XML namespaces provide a simple method for qualifying element and attribute names used in Extensible Markup Language documents by associating them with namespaces identified by URI references."

Knex.js is a query builder for Postgres, MySQL and SQLite3, Oracle and MS SQL Server. It is designed to be flexible, portable, and fun to use. It features both traditional node style callbacks as well as a promise interface for cleaner async flow control, full featured query and schema builders, transaction support, connection pooling and standardized responses between different query clients and dialects.

The ASP.NET AJAX Control Toolkit is an open-source project built on top of the Microsoft ASP.NET AJAX framework.

The Apple Watch is a smartwatch that was announced by Apple on September 9, 2014, with first deliveries in April 2015. Its third-party API, WatchKit, was released in November 2014. Use this tag for questions relating to Apple Watch hardware. For software questions, use the [watchkit] tag.

AMP HTML (Accelerated Mobile Pages HTML) is a project to make the web faster as well as easier to develop. It is a set of HTML tags, a JavaScript library, and a cache for AMP-compliant pages.

The sequence of actions required to construct a software product or executable application, or the system which performs such actions.

Questions about image resolution.

Questions directly related to programming computer gaming and interactive graphics/video. Questions involving game logic or general game development (which are off-topic here) should be asked at https://gamedev.stackexchange.com/

ESP8266 is a highly integrated chip which offers a complete and self-contained Wi-Fi networking solution, allowing it to either host applications or offload all Wi-Fi networking functions from another application processor.

A user agent is a piece of software (a software agent) that acts on behalf of a user. The term is often used to refer to browsers, and other software that sends network requests. In the HTTP protocol, a user agent identifies itself to the server using a user-agent string. The user-agent string is a string in the header of an HTTP request that identifies the browser, version, device, os, and other information about the device from which the request came.

Single instruction, multiple data (SIMD) is the concept of having each instruction operate on a small chunk or vector of data elements. CPU vector instruction sets include: x86 SSE and AVX, ARM NEON, and PowerPC AltiVec. To efficiently use SIMD instructions, data needs to be in structure-of-arrays form and should occur in longer streams. Naively "SIMD optimized" code frequently surprises by running slower than the original.