-Adds one entry to database.
-
- $out->add(
- id => 42,
- ds => $ds,
- type => 'display',
- text => 'optional text from which snippet is created',
- );
-
-This function will create entries in index using following URI format:
-
- C<file:///type/database%20name/000>
-
-Each tag in C<data_structure> with specified C<type> will create one
-attribute and corresponding hidden text (used for search).