what is a ByteReadChannel or ByteWriteChannel, I'm...

# ktor

[Ifvwm]

what is a ByteReadChannel or ByteWriteChannel, I'm familiar with inputStream or ByteBuffer stuff, but I have no idea what a channel meaning here? I do read the doc https://api.ktor.io/1.3.0/io.ktor.utils.io/-byte-read-channel/index.html but I still don't know...