Color 0 is see-through when spr() draws. Keys 0-9 and a-f pick a color; Alt-click or right-click on the sprite picks one up. The editor writes a SPRITES table into the code, each sprite a row at a time.

No map yet. A map is a grid of your sprites, up to 128 x 64 cells: levels bigger than the screen, drawn with one call, map(), and read with mget(x, y).

The dashed lines mark screens: 16 x 16 cells is the 128 x 128 picture. Draw it in your cart with map() (with camera(x, y) to scroll); mget(x, y) says what's in a cell, so mget(flr(px / 8), flr(py / 8)) is the cell under a pixel.

Sound 8 is empty. Make it with + New sound, or start it from a preset with New from….

Draw notes at the top with the instrument and effect picked above; volume goes in the row below them, and the bottom strip paints the picked instrument and effect. Shift-drag picks notes to copy. Play it in your cart with sfx(8).

No song yet. A song is a list of patterns; each plays up to four of your sounds at once, for as long as the longest of them. Add one with + Pattern.

Patterns play in order. "Loop back" returns to the last "loop start"; "stop" ends the song there. Start it in your cart with music(0); music(-1) stops it.