How to filter line items based on description / designations in quote page?

This article helps user to filter for required line item based on the filter criteria.

1. Line items available in quote can be filtered based various filter criteria for description / designation.  
2. Filtering options are available are listed below and can be triggered by clicking the   and displays the line item.
   a. Equals: Used to filter based on a particular value
   b. Not equal: Used to filter based other values which is specified 
   c. Starts with : filter the values which has the starting word  
   d. Ends with : filter the values which has the ending word
   e. Contains: filter the values which contains the word specified
   f. Not Contains: filter the values which does not contains the word specified