LabVIEW is a graphical dataflow language, which means that you build applications by stringing together a set of routines represented by images. It was designed for interfacing with measurement and control devices through simple code, which allows you to build complex tools without having to write a single line. 

Laboratory Virtual Instrument Engineering Workbench (LabVIEW) is a system-design platform and development environment for a visual programming language from National Instruments. The graphical language is named "G"; not to be confused with G-code.