For review and comment until October 1. At that time "Draft 1" will be issued, for discussion at the October ZIG meeting.

1. Abstract
   • beginning date/time
   • ending date/time
   • date/time record added to database
   • date/time record last modified
   • date/time record last reviewed
   • duration
   • any
   • anywhere
   • server-choice
   • cost
   • score
   • rank
   • local number

2. Field Name
   • wildcard
   • wildpath

3. Weight
   The weight assigned to the term, for purposes of assigning scores to records. An integer from 0 to 1000.

   May be attached to a term in a request query (submitted by the client in a search request) in which case the supplied value indicates the weight that the client requests be attached to the term.

   May be attached to a term in a response query (returned by the server in a search response) in which case the supplied value indicates the weight that the server attached to the term, or the weight that the server recommends for use in a re-submitted query. When supplied by the server the value may be the same as, or different from, the value in the submitted query. May be supplied by the server even if it was not supplied in the request query.

4. Hit Count
   May be attached to a term in a returned query in the Search response, and its value is the number of records in which the term occurs. Meaningful only in a returned query, although it may occur in a submitted query but should be ignored by the server. (The server should not infer any semantics based on the occurrence of this attribute, however, nor should the server treat its occurrence as an error, because the client may have simply resubmitted a reformulated query or query otherwise previously returned by the server, where the server included a Hit Count attribute.)

5. Stopwording
   Presence of this attribute attached to a term in a request query (submitted by the client) indicates that the client requests the server not to treat any words in the term as stopwords. The only valid value of this attribute in a request query is 0.

   Presence of this attribute attached to a term in a response query (returned from the server) indicates that the server treated one or more words in the term as stopwords. The only valid value of this attribute in a response query is 1.

6. Language
   Character string based on RFC 1766 .

7. Content Authority
   ?

8. Expansion/Interpretation
   • phonetic
   • stem
   • thesaural expansion
   • singular matching
   • plural matching
   • treat term as verb
   • treat term as noun
   • treat term as adjective
   • case sensitive
   • case insensitive
   • regular expression
     as prescribed by IEEE 1003.2 Volume 1, Section 2.8 "Regular Expression Notation"

9. Comparison
   • For numerical and unit comparisons: Integer and IntUnits, as well as Externals and other expressions that evaluate to unit values, including date/time.
     • numerically equal
     • numerically less than
     • numerically less than or equal
     • numerically greater than
     • numerically than or equal
     • numerically not equal
   • For range comparison (may be used with an external datatype, for example, term-1 or term-2)
     • Between
     • contained in bounding-polygon
   • For character strings
     • lexically equal
     • lexically less than
     • lexically greater than
     • lexically less than or equal
     • lexically greater than or equal
     • lexically not equal
     • left truncation
     • right truncation
     • regular expression
   • For language strings
     • complete match
     • doesn't match
     • Word-by-word left truncation
     • Word-by-word right truncation
     • relevance feedback
   • For character or language strings
     • contains
   • With any type of term
     • always matches
     • never matches

10. Format/structure
    • character string
    • language string

11. Occurrence
    Indicates the desired occurrence of the specified access point. Integer. For example, to indicate second author, the value of the Abstract (or Field Name) attribute is 'author', and the value of the Occurrence attribute is 2.

12. Indirection
    • URL
    • ...