@Dennis Is this enough to claim SBCS when characters are not in Dyalog Classic?

@Dennis Is BF which uses 8 different symbols a different language? Is BF stored as 3-bits/command a different language? Anyway, I'll post on meta.

@Dennis Doesn't there must be an actual file with the claimed byte count that, when fed to your interpreter, runs the intended program. How you interpret the bytes (or bits) in that file as characters is entirely up to you, as is whether you internally or externally provide conversion methods between the unreadable binary file and the readable ASCII-only interpretation of the file answer the question?

@Adám Yes, it is. TIO has several languages that are just BF with different symbols or a different encoding.

@Adám No. You can definitely claim that it's X bytes, but maybe not that it's X bytes in APL.

@Dennis What if I modify the Dyalog APL wrapper so that it has a flag causing it to take my custom SBCS files, auto-transliterate them, and then run them? Isn't this basically what Jelly provides?

@Dennis On TIO, Jelly is always run with the fu option, and I don't see that contributing to byte count.