I think that was my original theory. I probably even saw the R at some point, thought it came about because of the \r escape sequence, and forgot it wasn't like that all along.
Keep in mind that the underscore is added by the Arc compiler though. The M or R is being successfully compiled as a global variable reference. ^_^
Use (quit) to quit, (tl) to return here after an interrupt.
arc>
'(
Pocket-N/A)
(Rocket-N/A)
arc>
