no-state

gistfile1.txt

s: 011001 22
a: 010000 2
r: 000101 24

t: 011101
0011000010, 2 width

take any while second is 0, data is first
when 1 then create operation bits, add 1 bit, then do &
0
always 1 at first, then & rest of entire string, take first only
1 & 11001
011100 this is program, 1 width
program shows 1 for all affected bits
program and source together:
001111010001

now do xor whole program with source, 2 at a time
000101

Why all this?? We keep program and instructions with the data, so that we don't have things in memory. If program fails we dont know where to start really.
With this, we can at any point resume operation if we know the width of the stream.

So as long as what's on disk is 2, 4, 6 etc, we know that we need to start reading from half of that to resume.