john-users - Case Toggling

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Date: Tue, 19 Mar 2013 11:21:44 -0400
From: Rich Rumble <richrumble@...il.com>
To: john-users@...ts.openwall.com
Subject: Case Toggling

I'm curious why I'd use the "NT" rule as opposed to "t" ?

TDQT[z0]T[z1]T[z2]T[z3]T[z4]T[z5]T[z6]T[z7]T[z8]T[z9]T[zA]T[zB]T[zC]
vs
t <D >4

Shouldn't that do the same thing (with the added reject of less than 4).
Does the "NT" toggler, for 13 character passwords for example, does that
rule (TDQT...) only apply to words that are 13 or greater, or perhaps only
words that are 13 characters? Is the "TN" length aware? Would a 4 character
password be processed by the NT rule more than once?
I should also ask is less/greater than behavior literal, e.g. <4 is "3 or
less" and >4 is "5 or more"?
-rich