Thanks! So $v, $x, $y, and $z should always get a "--" before them --
that's sufficient logic to do it 'right'? I guess an LCSH 6xx always
needs an $a first, so I don't need to worry about if a $v or $x happens
to come first, and shouldn't get a preceding "--".
Should I do this only for 6xx with 2nd indicator 2 indicating LCSH, or
do people generally just do this for all 6xx?
Tod Olson wrote:
> Only for certain subfields:
> Dash (-) that precedes a subdivision in an extended 600 subject
> heading is not carried in the MARC record. It may be system generated
> as a display constant associated with the content of subfield $v, $x,
> $y, and $z.
> From http://www.loc.gov/marc/bibliographic/bd600.html
> On Sep 23, 2009, at 9:09 AM, Jonathan Rochkind wrote:
>> Hi all, I'm writing some marc record display code, and I have a
>> question about the 'right' way to display LCSH headings.
>> LCSH headings are typically displayed with "--" between components.
>> But looking at the MARC, it looks like the "--" punctuation isn't
>> actually in the MARC field. (A rare instance where display
>> punctuation isn't in the marc!).
>> Is it correct for any LCSH 6xx field (which you know because the 2nd
>> indicator is 0, right?), to add "--" between ALL present subfields
>> on display? Do I have the right logic there?
>> Thanks for any advice!