Meaning to ←[2K in output lines?

[Patch4747]

After using the stream command, each output line of text is appended with ←[2K. I'm wondering what it means, if anything? https://github.com/ggerganov/whisper.cpp/blob/6559b538e5e05cfa199c15d46ca5bd0edd353974/examples/stream/stream.cpp#L345

[tamo]

https://stackoverflow.com/questions/1508490/erase-the-current-printed-console-line

maybe you can use a vt100 compatible terminal