To give a straightforward explanation of what is alluded to here, Loglan didn't have y originally, and bare cmene were legal vocatives. Some people used r as a hesitation noise, and pc proposed that this was actually an invocation of the god of hesitation (see also ki'ai). As a result, R was introduced into the Pantheon of Loglan Gods.
la .ybul
(Cf. YHWH)
Any relation to Abel is purely coincidental...
May be related to the DFA (Deterministic Finite Automaton). See Lojbanic Qabbalah. *sigh*
Also "Schwa"--a key figure in Postmodern Ufology.