Selects documents whose document field values are less than or equal to the search string you specify. Use LESS THAN OR EQUAL TO with the FILTER operator. The syntax for LESS THAN OR EQUAL TO is the same as that for GREATER THAN OR EQUAL TO. See the example for GREATER THAN OR EQUAL TO under the topic "film" on "Sample Topic Outlines." The example assumes that the field DATE has been created for the collection.