Specific functionality provided by software.

Graphical User Interface using visual interaction elements.

Data type containing a predefined set of named values.

Source-control branch used to develop a feature.

Fixed-size value derived from input data.

Named value supplied by an operating environment.

Configuration mechanism enabling or disabling functionality.

Function converting data into a hash value.

Techniques for detecting and responding to errors.

Identifier used by an operating system for an open resource.