Quick Reference

matrix.init:                    Initialize the display
matrix.brightness!: level       Brightness (0-7)
grid.clear:                     Clear all pixels
grid.set: x, y, true            Light a pixel (0,0 = top-left)
grid.rect: x, y, w, h, true     Draw a rectangle outline
matrix.fillRect: x,y,w,h,true   Draw a filled rectangle
grid.fill: true                 Fill all pixels
grid.fill: false                Clear all pixels
grid.show:                      Push to display

grid.width  -> 12               grid.height -> 8

joy.up?:     joy.down?:         Joystick -> true/false
joy.left?:   joy.right?:
joy.click?:                     Joystick button
knob.left:                      Left knob -> 0-100
knob.right:                     Right knob -> 0-100

words                           List all names
show @name                      See a definition
info @name                      See metadata

name is value                   Create a named value
set name to value               Change a value
to name [ ... ]                 Define/redefine a function
to name with a, b [ ... ]       Function with parameters
here x is 5                     Local variable

if expr [ ... ] else [ ... ]    Conditional
when expr [ ... ]               One-branch conditional
while expr [ ... ]              Loop
repeat n [ ... ]                Fixed-count loop
repeat n as i [ ... ]           With counter

save                            Snapshot to storage
restore                         Reload from snapshot
dangerous.wipe                  Factory reset
Ctrl-C during boot              Safe boot

ms: 100                         Wait 100 milliseconds
millis:                         Current uptime in ms
random.below: n                 Random 0 to n-1
math.clamp: val, lo, hi         Clamp to range
math.wrap: val, size            Wrap around

word:                           No arguments
word: a, b                      With arguments
(word: a, b)                    Nested call