VT version 5 and higher Working Sets are required to send the Unsupported VT Function message when receiving unsupported functions from the VT server. We should also incorporate listening to the VT Unsupported VT Function to know when the VT doesn't support a particular command we sent.
It is allowed for VTs and Working Sets that were designed for VT version 4 and earlier to also incorporate these messages.
VT version 5 and higher Working Sets are required to send the
Unsupported VT Functionmessage when receiving unsupported functions from the VT server. We should also incorporate listening to theVT Unsupported VT Functionto know when the VT doesn't support a particular command we sent. It is allowed for VTs and Working Sets that were designed for VT version 4 and earlier to also incorporate these messages.