Scope	Variable
=====	========
cycle	A$: pressed key
draw	B: block code (96: border, 250: path)
cycle	C: colored blocks count / count while drawing
end	C$: entered name
cycle	D: direction (0=undecided) / title loop counter (1-6, 7:game init, 8:high scores)
prg	D(0-3): direction deltas for drawing paths (1,40,-1,-40)
game	D$: down key
	E: enough of new path (-random)
cycle	F: frequency of new path appearing (+: wait, 0:trigger, -:draw)
cycle	G: gamer poke
stage	H: color code of colored block / music state at title (1-92) / high score position at enter high scores
prg	H(1-10): high scores
prg	H$(1-10): high score names
cycle	I,J,K: loop variables
stage	L: length of path (1-250, resets at every stage) / sound length at title
game	L$: left key
cycle	M: move of gamer (direction)
stage	O: goal # of colored blocks
cycle	P: will poke at / P%() index while D=0
stage	P%(1-250): poke address of block
game	R$: right key
game	S: stage (1-9) / sound pitch at title
stage	T: time left
game	U: ultimate score (sum of remaining times + colored blocks + stage bonuses)
game	U$: up key
prg	V: sound volume
cycle	W: will of gamer (direction) / dummy for some tricks
prg	Z: zone diff between color map and char map (1024)
prg	Z$: timer reset string ("000000")

0 program init --> title screen
10 game init
20 next stage init
100 randomize and draw paths
200 control gamer --> out of time OR stage win OR other commands OR randomize and draw paths
250 out of time (game over) --> enter high scores OR next stage init
300 other commands --> next stage init OR control gamer
350 stage win --> next stage init OR game win
390 game win --> enter high scores
400 overall score display - RETURN
500 draw stage - RETURN
900 draw path (returns C=0) - RETURN
990 stage data lines (seed, start, count, direction, ..., count, direction, 0)
1000 title screen
1100 title loop --> game init OR high scores
1120 music loop - RETURN
1170 keys & volume control - RETURN
1300 enter high scores --> high scores
1500 high scores --> title screen
2000 music data (sound 1 pitch, sound 1 length, sound 2 pitch, sound 2 length, ..., -1)