ganv: ganv (interactive Gtk widget library)
ganv:
ganv: Ganv is an interactive Gtk widget for interactive "boxes and lines" 
ganv: or graph-like environments (e.g. modular synths or finite 
ganv: state machine diagrams).
ganv:
ganv: http://drobilla.net/software/ganv/
ganv:
ganv:
ganv:
ganv: