Memorizer

Masking a part of content by [memorizer] shortcode, and unmask it by click.
You can make word books, quizzes and exams by using this plugin.

How to use

1. In post edit screen, enclose some words where you want to hide in [memorizer] shortcode. The words will be shown as ‘●●●’.
   ◯demo shortcode
   [memorizer]text[/memorizer]
2. By a first click on a cetain ‘●●●’, the hidden words would be displayed. After that, each click alternates ‘●●●’ with the hidden.
3. By clicking ‘Mask’ icon in the bottom right of a page, all enclosed words’ display condition would be switched at once.