Serial port and <R66> <R67>

[FRC57]

The Labview and Windriver environments seem to have robust support for the cRIO's serial port, but Rules <R66> and <R67> do not list the cRIO serial port as one of the legal interfaces for custom circuits. So is the cRIO serial port a legal interface for custom circuits, or should we ignore these functions in the FRC Libraries provided to teams?

[GDC]

The serial port is not available for use during the competition this year. Use of this port is not permitted.