Usage guides
Complete an everyday task with worked examples. Each guide links to the free tools you need.
How to check an assignment’s word count and reading time
Separate the body, references and quotations before checking an assignment, then use worked examples to understand word counts and estimated reading time.
How to alphabetize a list and remove repeated lines
Put one record on each line, compare natural number sorting with duplicate removal, and choose the matching rules before keeping the first occurrence.
Discount amount, percentage ratio and percentage change explained
Choose the right calculation using 15% off 200, the ratio 30/200 and a change from 100 to 120, then check how successive discounts combine.