Unofficial Name: SendVariable
BCALL Address: 4F15
Sends any variable via silent link through the link port.
If the variable is not found, it sends the exit packet and receives acknowledge.
If sending to a TI-83, it will refuse to send any variable with a type byte of 14h or higher. It will also refuse to send any variable with a non-zero value in the version byte of its VAT entry (if sending to a TI-83).
It will not send EOT, so you can call this repeatedly for as many variables as you want to send and then send EOT with something like Send4BytePacket.