I disagree, for me if I have an external connection such as a transmit or receive I imagine my net labels and labels on my board as an explanation of my boards functionality. If I had a serial port then the pin my board transmits on will be labeled "Transmit" or "Tx". Each label means "This is what I do", "I transmit here", "I receive here".

This could be a matter of opinion, but it makes much more sense to me to label things in this manner.

I, often, have 2 devices on the same board communicating through the UARTS e.g. a '51 to a Vinculum (usb master chip) or a '51 to a VFD (Vacuum Fluorescent Display). Such signals are labelled e.g. US_TX_SD_RX (the abbreviations are 'standard' and non-confusing to those familiar with the thingies).

Erik