WordPress.org

There seems to be a bad explanation for a term that I want to have in my glossary. How can I change that?

You can do this by creating your own lexicon at Factolex.com by clicking the checkboxes for facts that you find relevant. After you specify your username in the Factolex Glossary Settings the definitions are updated accordingly.

Will it degrade the performance of my blog?

This should not be a problem. All the data is cached in your local WordPress database.

Just when you browse your own blog (still logged on to your blog account), we refresh your own lexicon (if you have specified a username). This might cause some slowdowns, but those don't happen for your users.

How can I customize the look and feel?

You can customize color, width and height through the Factolex Glossary Settings. If that's not enough, you can also edit the file /wp-content/plugins/factolex-glossary/factolex-glossary.css. Be careful when updating the plugin. You could consider copying your changes into your theme CSS file.