"info" URI Scheme

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info:lc/

info-namespace lc
namespace-title Library of Congress Identifiers
registration-date 2007-10-15
namespace-authority
organisation-name Library of Congress
organisation-address 101 Independence Ave, SE Washington, DC 20540
organisation-uri http://www.loc.gov
contact-person Ray Denenberg
contact-email rden@loc.gov
contact-tel 202-707-5795
contact-uri
identifier-syntax
description
An  'info' URI with  namespace  'lc' takes the form:

info:lc/<lc-info-subspace>/<subspace-specific-string>
 
lc-info-subspace

lc-info-subspace = ALPHA *( ALPHA / DIGIT )

i.e. alphanumeric with leading alphabetic character.

Values of lc-info-subspace are assigned by the Library of 
Congress and registered at 
http://www.loc.gov/standards/uri/LcInfoURI.html. 
The Library of Congress will designate an authority for each 
value.

subspace-specific-string

subspace-specific-string = 
subspace-specific-component *("/" subspace-specific-component) 

subspace-specific-component

subspace-specific-component = pchar *(pchar) 

pchar (etc.)

pchar is as defined in RFC 3986, that is:

pchar  = unreserved / pct-encoded / sub-delims / ":" / "@"
unreserved    = ALPHA / DIGIT / "-" / "." / "_" / "~"
pct-encoded = "%" HEXDIG HEXDIG
sub-delims  = "!" / "$" / "&" / "'" / "(" / ")"  / "*" / "+" / "," / ";" / "="

ALPHA, DIGIT, AND HEXDIG are as defined in RFC 2234: upper 
or  lower case alphabetic (A-Z / a-z), decimal digit (0-9), 
and hexadecimal digit (DIGIT / "A" / "B" / "C" / "D" / "E" / 
"F")  respectively.

Percent Encoded Characters  

No characters in general needs to be percent encoded. 
uri http://www.loc.gov/standards/uri/LcInfoURI.html
identifier-normalization
description
All identifiers in the info:lc namespace are case-sensitive.
uri
identifier-examples
identifier-example
native
info-uri info:lc/xmlns/marcxchange-v1
identifier-example
native
info-uri info:lc/xmlns/rmd-v1
identifier-example
native
info-uri info:lc/xmlns/update-v1
identifier-example
native
info-uri info:lc/xmlns/mods-4.0
identifier-example
native
info-uri
identifier-example
native
info-uri
namespace-information
description
This info namespace will be used for various lc identifiers, 
where the identifier class is specified by the 
lc-info-subspace.  Only one such subspace is defined 
initially, ‘xmlns’.   xmlns identifiers are XML namespace 
URIs.
For a discussion of why ‘info:’ (rather than for example 
‘http:’) might be used for XML namespace URIs, see 
http://www.loc.gov/standards/uri/xml-namespaces.html
uri
service-mechanism
description
No service mechanisms are at present defined. If any are 
defined in the future they will be described at 
http://www.loc.gov/standards/uri/LcInfoURI.html
uri

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The "info" URI Registry Prototype is currently managed by the OCLC Office of Research on behalf of NISO.