</varlistentry>

<varlistentry>

<term>

<indexterm>

<primary>setweight</primary>

</indexterm>

<literal>setweight(<replaceable class="PARAMETER">query</replaceable> <type>tsquery</>, <replaceable class="PARAMETER">weight</replaceable> <type>"char"</>) returns <type>tsquery</></literal>

</term>

<listitem>

<para>

<function>setweight</> returns a copy of the input query in which every

position has been labeled with the given <replaceable>weight</>(s), either

<literal>A</literal>, <literal>B</literal>, <literal>C</literal>,

<literal>D</literal> or their combination. These labels are retained when

queries are concatenated, allowing words from different parts of a document

to be weighted differently by ranking functions.

</para>

<para>

Note that weight labels apply to <emphasis>positions</>, not

<emphasis>lexemes</>. If the input query has been stripped of

positions then <function>setweight</> does nothing.

</para>

</listitem>

</varlistentry>

<varlistentry>

<term>

<para>

Specific stop words recognized by the subdictionary cannot be

specified; instead use <literal>&lt;-&gt;</> to mark the location where any

specified; instead use <literal>?</> to mark the location where any

stop word can appear. For example, assuming that <literal>a</> and

<literal>the</> are stop words according to the subdictionary: