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Slash-delimited category names
The spec says about categories:
<category> sub-element of <item> But what if an element itself uses the forward slash, for
example: Hydrogen/potassium ATPase, which -- it's been pointed out
-- is a valid Library of Congress Subject Heading?
<category> is an optional sub-element of <item>.
has one optional attribute, domain, a string that identifies a
The value of the element
is a forward-slash-separated string that identifies a hierarchic
location in the indicated taxonomy. Processors may establish
conventions for the interpretation of categories. Two examples are
may include as many category elements as you need to, for different
domains, and to have an item cross-referenced in different parts of the
We think the simplest solution will be to escape the forward slash in that element, so for example:
We invite users of taxonomies in which this issue arises to comment on whether this will, in fact, work acceptably.