A JavaScript engine is a program or interpreter which executes JavaScript code.

A JavaScript engine may be a traditional interpreter, or it may utilize just-in-time compilation to bytecode in some manner.

Although there are several uses for a JavaScript engine, it is most commonly used in web browsers.

In computing, a plug-in (or plugin, add-in, addin, add-on, addon, or extension) is a software component that adds a specific feature to an existing computer program.

When a program supports plug-ins, it enables customization.

The common examples are the plug-ins used in web browsers to add new features such as search-engines, virus scanners, or the ability to use a new file type such as a new video format.

Well-known browser plug-ins include the Adobe Flash Player, the QuickTime Player, and the Java plug-in, which can launch a user-activated Java applet on a web page to its execution on a local Java virtual machine.

Adobe Systems Incorporated is an American multinational computer software company.

The company is headquartered in San Jose, California, United States.

Adobe has historically focused upon the creation of multimedia and creativity software products, with a more recent foray towards rich Internet application software development.

It is best known for Photoshop, an image editing software, Acrobat Reader, the Portable Document Format (PDF) and Adobe Creative Suite, as well as its successor Adobe Creative Cloud.

In computing, input/output or I/O (or, informally, io or IO) is the communication between an information processing system, such as a computer, and the outside world, possibly a human or another information processing system.

Inputs are the signals or data received by the system and outputs are the signals or data sent from it.

The term can also be used as part of an action; to "perform I/O" is to perform an input or output operation.

A workflow consists of an orchestrated and repeatable pattern of business activity enabled by the systematic organization of resources into processes that transform materials, provide services, or process information.

It can be depicted as a sequence of operations, declared as work of a person or group, an organization of staff, or one or more simple or complex mechanisms.