Backquote idioms

[Bernard S. Greenberg <BSG@SCRC-STONY-BROOK.ARPA>]

    Date: Wed, 22 May 85 11:54 EDT
    From: David C. Plummer in disguise <DCP@SCRC-QUABBIN.ARPA>

	Date: Wednesday, 22 May 1985, 10:56-EDT
	From: Guy Steele <gls%AQUINAS@THINK.ARPA>

	```(,@',,@q)				;Alan's example
	    ...etc...
	(QUOTE (3 5) (4 6))
	<error>		;but would be sensible if Q were the singleton list (R),
			    ; in which case third evaluation would produce (3 5).

	Do you all believe these?

    Does it matter?  RWK said he has never used a triple backquote.  Neither
    have I.  There may be applications which are really good hacks, but can
    they be maintained?  Even some double nested backquotes require enough
    though that they should probably be avoided.  Conciseness and
    compactness does not imply clarity and robustness.