params_example_1: Parameter list example as provided by a datatable.
In grahamrp/dtdatasources: Implementations of DT Server Side Processing

A named list as processed by a funcFilter. This example results from viewing the first page of a datatable, after ordering the first two columns.

1	params_example_1

A list with 7 elements:

draw: chr integer, draw counter
start: char integer of first visible record on page (indexed from zero)
length: char integer of page size, e.g. default is 10 records per page
escape: char control html escaping, e.g. "true". See renderDT escape parameter
columns: unnamed list containing one named list item per column
order: unnamed list containing one named list item per sorted column
search: named list with the search $value and other search options