[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Z] Randal, Allison  2nd  read opcode  2nd  readline opcode  references      to subroutines  referencing operator  register backing stacks  register frames     clearing      saving to backing stack  registers     difference between PASM registers and temporary register variables      Parrot  [See PASM, registers]     reserved      spilling in IMCC      usage and subroutines      usage for subroutine calls  regular expressions  repeat opcode  2nd  request, system  restore opcode  2nd  restoreall opcode  2nd  ret opcode  return conventions  return exception  reuse, principle of  RFCs  rotate_up opcode  2nd  Rule class  rule syntax  rules     built-in      grammars and  runinterp opcode  running.pod file  rvalues, using * on