Suggestion for new feature – OALD 9th edition Review

It is their very good dictionary. However it doesn’t have a feature which is called “quick search” that enables users to look up a new word while they are reading a book in the PDF file or in the Kindle app without switching back and forth between the dictionary and the ebooks . Please add this new feature. People would be more appreciated for this new feature and they are also more happy to pay for the app. Thank you so much.
Review by Danh Nguyen 1993 on OALD 9th edition.