Understand block comments in assembly (`.s`) files

[jonathanpeppers]

Examples like:

https://8bitworkshop.com/v3.10.0/?platform=nes&file=chr_generic.s

Have lines like this:

;;{w:8,h:8,bpp:1,count:256,brev:1,np:2,pofs:8,remap:[0,1,2,4,5,6,7,8,9,10,11,12]};;
...
;/* use block comment to map a subset of data to sprite bitmaps */
;/*{w:16,h:16,bpp:1,count:15,brev:1,np:2,pofs:8,remap:[5,0,1,2,4,6,7,8,9,10,11,12]}*/

I just removed them from samples / tests. Because they don't appear to affect the binary output.

We should understand what these are, and if we need them.