Keyboard Commands

Arrows Increment or decrement selected neurons and weights
Shift-Arrow Nudge objects
A / Control-A     Select all
N Select all neurons
W Select all weights
U Unselect
Control-C Copy selected neurons and weights
Control-X Cut selected neurons and weights
Control -V Paste selected neurons and weights
Delete Delete selected objects
P Add or "put" a new node. Nodes will be added next to selected nodes or where you last clicked in the network panel
R Randomize selected objects. Randomization is a uniform distribution between the upper and lower bounds set for each neuron or weights.
Space-bar Update network and world
S Update network but not world.
Z Enter the "zoom-in" mode