Search Operators 	

    In Standard Search or Forms Search Modes, the following Search
    Operators are available:

    AND, OR, NOT, Boolean logic operators
    W/n, ADJ Proximity operators; n is a number (ADJ =W/1)
    ()   Any level of nested parentheses allowed
    ?    Matches any one character, e.g. m?cro
    *    Matches any string, e.g. micro*
    Q_n  Refers to search number n, e.g. Q_3 AND Q_4
    D_n  Refers to document number n, e.g. Q_3 ORD_147
    w!   Expands word w to related words
    w:field-1,field-2...Limits search for word w to   
         field-1,field-2..
    /F:field-1,field-2...Limits whole search to   
              field-1,field 2
    valOPfieldOPval is a whole number and OP is >, <, 
 
    You may use any Search Operator at any time between two search
    variables and the Search Operator will override the default
    Search Operator.

    -- Example of a simple, field-specific search:

         Smith:name Chicago:location engineering:subject

    -- Example of a complex, non-field specific search concerning
    computer programming and software development techniques:

         ((computer and programming) or (software w/2
         development)) and techniques
              
    -- Example of another complex search using whole documents
    (indicated by Doc ID #), single word Expansion results (!), a
    previous search (Q_2), a field specific variable (smith in the
    name field), and a range search between the years 1981 and 1984 
    in the year field.
  
         D_17, D_25 or programming! or Q_2! and smith:name 
         and 1981<year<1984