info gnuplot

1.6 Features introduced in version 4.0

Gnuplot version 4.0 contained many features introduced since the preceding official version 3.7. These are summarized here.

1.6.1 Mouse and hotkey support in interactive terminals
1.6.2 New terminals
1.6.3 New plot style
1.6.4 Filled boxes
1.6.5 New plot option smooth frequency
1.6.6 Improved text options
1.6.7 More text encodings
1.6.8 Arrows
1.6.9 Data file format
1.6.10 New commands
1.6.11 Other changes and additions
1.6.12 Accompanying documentation