## Keyboard Commands

return |  | start/stop generating
space |  | advance by 1 generation
tab |  | advance by current step
delete |  | clear selection
shift+delete |  | clear outside selection
arrow key |  | scroll up/down/left/right
shift+arrow key |  | scroll NE/SW/NW/SE
- or _ |  | decrease step size
+ or = |  | increase step size
0 |  | set step exponent to 0
1 |  | set scale to 1:1
5 |  | randomly fill selection
[ |  | zoom out
] |  | zoom in
a |  | select all
A |  | remove selection
f |  | fit entire pattern in view
F |  | fit entire selection in view
h |  | show help
i |  | toggle icon mode
l |  | toggle grid lines
m |  | put cell at 0,0 in middle
o |  | open a file on your computer
O |  | open clipboard pattern or rule
p |  | change preferences
r |  | set rule
s |  | save pattern to your computer
t |  | toggle auto fit
v |  | paste
V |  | cancel paste
x |  | flip paste image or selection left-right
y |  | flip paste image or selection top-bottom
> |  | rotate paste image or selection clockwise
< |  | rotate paste image or selection anticlockwise
z |  | undo
Z |  | redo