TIL that the names of PNG chunks being in sPoNGeBob mEMe case actually carries meaning to parsers:
For example, the hypothetical chunk type name bLOb has the property bits:
bLOb <-- 32 bit chunk type code represented in text form |||| |||+- Safe-to-copy bit is 1 (lowercase letter; bit 5 is 1) ||+-- Reserved bit is 0 (uppercase letter; bit 5 is 0) |+--- Private bit is 0 (uppercase letter; bit 5 is 0) +---- Ancillary bit is 1 (lowercase letter; bit 5 is 1)Therefore, this name represents an ancillary, public, safe-to-copy chunk.
that's… actually a really clever way to encode something that is both human-readable and also packs additional metadata bytes in the upper/lower case bit of ascii