To append is to join or add on to the end of something.

Use this tag for questions relating to web applications residing on Azure. Azure App Service is a cloud-based platform for hosting web applications, REST APIs, and mobile back ends. It was formerly known as Azure Web Sites. You can deploy applications written in a variety of languages: .NET, .NET Core, Java, Ruby on Rails, Node.js, PHP and Python, using either a Windows or Linux container.

An argument is a value passed to a function, procedure, or command line program. This also refers to the Array-like `arguments` object in JavaScript.

The PIVOT syntax converts row data into columnar data, and vice versa for the UNPIVOT syntax. The syntax is non-standard, and not all databases support the PIVOT syntax, but the functionality can be implemented, often using decision logic (CASE expressions, etc) and aggregate functions.

Composer is an application-level package manager for the PHP programming language. It provides a standard format for managing with ease PHP-based project dependencies (libraries) and was strongly inspired by Node.js's "npm" and Ruby's "bundler". Use with the [php] tag

Radio buttons are elements used in forms. They let a user select exactly one of a limited number of choices.

DOM (Document Object Model) events allow event-driven programming languages to register various event handlers/listeners on the element nodes inside a DOM tree.

Synchronization refers to using controls to maintain a coherent representation, either a group of processes running the same program (process synchronization), or representations of data (data synchronization).

A stack is a last in, first out (LIFO) abstract data type and data structure. For questions about the assembly call stack, use [stack-memory], [stack-pointer], and/or [stack-frame] instead. For questions about the Haskell build tool, use [haskell-stack] instead. For questions about C++ std::stack, use [stdstack] instead.

Ionic 3 is the newer version of Ionic, an open source SDK that enables developers to build mobile apps using standard web technologies (HTML, CSS, and JavaScript). Ionic 3 is paired with Angular4 and above.

Passwords are primarily used as a way of accessing information and also limiting the number of users who can get access to a machine. It is primarily used with a username for the authorization system. Sometimes people use keys instead of passwords due to the increased strength of the keys.