Version 6.0 represented a major step forward in visualization and graphics, with many new and original concepts. Among them was full integration of
Mathematica symbolic graphics with all input and output, immediate real-time graphics, automatic adaptivity throughout, and widespread use of automated aesthetics methods pioneered at Wolfram Research.
ListPlot (modified),
ListLinePlot — support multiple datasets
ListContourPlot,
ListPlot3D,
... (modified) — now support irregular data
Graphics,
Graphics3D (modified) — now display inline in output, and can be input
Graphics3D (modified) — now supports full real-time rotation etc.
— interactive drawing tools and interactive graphics inspector
Opacity — transparency in 2D and 3D
ColorData — hundreds of color schemes and properties
Import,
Export (modified) — new framework for different parts and views of data
SoundNote — full support for MIDI-style musical notes and structures
