Note that universe files are now stored in ~/.planets, so you might want to drop the uni.9 example universe there. Normal keybindings H Display help dialog a Add Planet = Zoom In - Zoom Out B Toggle true bounce b Toggle bounce c, space Center k Display option dialog o Change all colors q, Escape Quit e Reset to empty universe s Save Universe l Load Universe u Undo (undoes last planet insertion) g Go Back (goes back to last planet insertion) p Toggle Pause t Toggle Trace d Double Trace Length h Halve Trace Length j Place random orbital planet r Place random planet x Initiate C-O-M tracking Up Pan Up Down Pan Down Left Pan Left Right Pan Right Also: * Drag a box around a set of planets to follow the center of mass of those planets. * Click on a planet to delete it Kidmode bindings: numbers : toggle tracing q,w,e,a,s,d,z,x,c: change colors space: move to center of mass escape: erase all planets all other buttons: add random planet