XML Schema for ResoureSync extensions to Sitemap files. See: http://www.openarchives.org/rs/ . 2013-01-06 first stab [Simeon Warner], 2013-08-15 for v0.9.1 [Simeon Warner], 2023-07-19 added profile attribute for rs:ln to reflect its use to add specificity to MIME types [Herbert Van de Sompel]. Metadata about a resource Links to related resources Allowed values of the change attribute are created, updated, deleted Path values must start with a slash, must not end with a slash MIME Content Types are described in RFCs 2045,2046 http://tools.ietf.org/html/rfc2045 http://tools.ietf.org/html/rfc2046 The priority attribute may have values 1 through 999999 Syntax for link relation values is specified by http://tools.ietf.org/html/rfc5988 and the relevant portion is: # link-param = ( ( "rel" "=" relation-types ) # ... # relation-type = reg-rel-type | ext-rel-type # reg-rel-type = LOALPHA *( LOALPHA | DIGIT | "." | "-" ) # ext-rel-type = URI # Registered link relations (reg-rel-type) are listed at http://www.iana.org/assignments/link-relations/link-relations.xhtml and URIs are allowed for extension (ext-rel-type)