Sort the index by clicking the heading of a column of its table, as a person does: a first click sorts by the column, a click on the column the index is sorted by turns the order around.
Examples
When I click the "Entry" column heading of the index
When I click the "Post Date" column heading of the index
When we click the "Expiry Date" column heading of the index
And I click the "Filename" column heading of the index
When I click the "Section" column heading of the index
Pattern
When(/^(I |we )*click the "([^"]*)" column heading of the index$/, …)
Part of @webship-js/craft-cms-steps (github.com/webship/craft-cms-steps), a step pack for Webship-js 2.0.x.