Certain options are Enabled/Disabled by default and they can be controlled with OPTIONS clause.
  OPTIONS
  {
      "OptionName1" : "Value",
	  "OptionName2" : "Value"
  }
| Name | Spec Data Types | Value | Default | Description | 
|---|---|---|---|---|
| implicit-conversion | [Boolean] | 
true,false | True | Automatic type conversion | 
  SELECT  css("#id1")  FROM  http://www.delven.io/test/index-01.html 
  OPTIONS
  {
      "implicit-conversion" : false
  }