On Mar 31, 2010, at 1:40 AM, Piers Chivers wrote: > Hmmm. Interesting. This is not my impression of the use of hierarchy. > Having re-read SDN.801 I can see it isn't clear what the purpose of > hierarchy is. [Having said that, I've yet to meet anything that is clear > in SDN.801 :) ] > > With your approach, how do I know if a label with classification value > of 27 dominates (or not) a label with classification value of 5? In the SDN.801 (and AC 322) approach provides no label domination function. > > Leaving classifications aside, I can still see a reason for hierarchy > attribute on categories. If I have a hierarchic category named "Impact" > with values "HIGH", "NORMAL" and "LOW" how do I present these to the > user appropriately? Do we sya that "convention" is that they are > presented in the order in which they are listed in the SPIF? The presented order certainly impacts display markings and, I would say, also impacts UI ordering. > I prefer formality to convention. NB I'm only proposing this as an > optional attribute. > > Regards, > Piers > > -----Original Message----- > From: xmlspif-bounce@xxxxxxxxxxxxx [mailto:xmlspif-bounce@xxxxxxxxxxxxx] > On Behalf Of Kurt Zeilenga > Sent: 30 March 2010 17:16 > To: xmlspif@xxxxxxxxxxxxx > Subject: [xmlspif] Re: Hierarchic categories > > > On Mar 29, 2010, at 10:59 AM, Piers Chivers wrote: > >> Hi, >> We are meeting requirements where there is a need for more than one > hierarchic list of values in a "label". >> >> As a solution to this would it be possible to add an "hierarchy" > attribute to the tagCategory element that has the same meaning as the > hierarchy attribute of the securityClassification element? > > Note that classification hierarchy in SPIFs is only for display purposes > (ordering of classifications in UI menus and such). It should not used > in evaluation of the ACDF. > > -- Kurt > > > > > Classification added by SAFEmail - Labelling, Protective Marking and > Release Control for Secure Messaging from Boldon James - > www.boldonjames.com/safemail-ics >