ByTheWay is a WordPress plugin providing shortcodes for collapsable annotations. Have a look at the
ByTheWay showcase gallery to get an idea of what is possible with ByTheWay.
Simple
ByTheWay is easy to use. ByTheWay supports nested annotations just by repeating the same shortcode.
Flexible
ByTheWay supports several optional attributes, providing a great deal of flexibility. You can change attributes per single annotation or by globally adjusting default attribute values in the admin backend. You can even use your own CSS styles.
Clean and Lightweight
On the client side, ByTheWay uses the jquery libraries coming with WordPress 3.6.1. So don't worry about conflicting libraries or wasted bandwith. On the server side, ByTheWay makes efficient use of resources – it should run quick even on shared webhosting and small servers.